The skeleton cast of a titanosaur is seen during a media preview at the American Museum of Natural History in New York January 14, 2016. The new, 122-foot (37-meter) dinosaur skeleton to be unveiled on Friday is too long to fit in the fossil hall and so its neck and head will poke out toward the elevator banks, offering a surprise greeting when the lift doors open.REUTERS/Shannon Stapleton 

The head of a skeleton cast of a titanosaur is seen extending out the door during a media preview at the American Museum of Natural History in New York January 14, 2016. The new, 122-foot (37-meter) dinosaur skeleton to be unveiled on Friday is too long to fit in the fossil hall and so its neck and head will poke out toward the elevator banks, offering a surprise greeting when the lift doors open. REUTERS/Shannon Stapleton 

People stand around the skeleton cast of a titanosaur during a media preview at the American Museum of Natural History in New York January 14, 2016. The new, 122-foot (37-meter) dinosaur skeleton to be unveiled on Friday is too long to fit in the fossil hall and so its neck and head will poke out toward the elevator banks, offering a surprise greeting when the lift doors open. REUTERS/Shannon Stapleton 

The skeleton cast of a titanosaur is seen during a media preview at the American Museum of Natural History in New York January 14, 2016. The new, 122-foot (37-meter) dinosaur skeleton to be unveiled on Friday is too long to fit in the fossil hall and so its neck and head will poke out toward the elevator banks, offering a surprise greeting when the lift doors open. REUTERS/Shannon Stapleton TPX IMAGES OF THE DAY

Cosplayers dressed as characters from the Star Wars movie series joke with an elevator operator during a charity event organised by the El Salvador Star Wars fan club at the Benjamin Bloom National Children's Hospital in San Salvador, El Salvador December 14, 2015. REUTERS/Jose Cabezas 

Snowboarders ride a lift with Lake Tahoe in the background at Squaw Valley in Olympic Valley, California, December 5, 2015. An El Nino is forecasted for California, and regular precipitation has been welcomed after years of drought. Picture taken December 5. REUTERS/Max Whittaker

Models wearing creations by Luis Benitez are seen in an elevator during an urban shoot as part of Andalucia de Moda (Andalusia Fashion) at the aquarium of Seville, southern Spain, November 11, 2015. The show will run until November 12. REUTERS/Marcelo del Pozo 

Models wearing creations by Luis Benitez are seen in an elevator during an urban shoot as part of Andalucia de Moda (Andalusia Fashion) at the aquarium of Seville, southern Spain, November 11, 2015. The show will run until November 12. REUTERS/Marcelo del Pozo 

A young passenger looks ahead into the elevator shaft as he rides the inclined elevator at the new 34th St./Hudson Yards subway station in midtown Manhattan, New York, September 13, 2015. After eight years and $2.42 billion, the 34th Street and 11th Avenue stop on New York's 7 train line has opened, featuring the longest escalator and first inclined elevator on the city's subway system. REUTERS/Brendan McDermid 

Volunteers of Animal Science and Well-being Organization (ORCA) and students carry sea lions Fabiana and Job inside their cages onto a boat in Callao, Peru, September 12, 2015. Four young sea lions returned to the wild after being rescued by marine biologists and treated for various illnesses. The sea lions are survivors of various illnesses which they contracted off the coast of Peru caused by the elevated temperatures in the water because of the El Nino phenomenon, according to Carlos Yaipen, Director of Animal Science and Well-being Organization (ORCA). REUTERS/Mariana Bazo 

A volunteer of Animal Science and Well-being Organization (ORCA), carries sea lion, Fabiana, in a cage onto a boat in Callao, Peru, September 12, 2015. Four young sea lions returned to the wild after being rescued by marine biologists and treated for various illnesses. The sea lions are survivors of various illnesses which they contracted off the coast of Peru caused by the elevated temperatures in the water because of the El Nino phenomenon, according to Carlos Yaipen, Director of Animal Science and Well-being Organization (ORCA). REUTERS/Mariana Bazo 

People get into an elevator with a poster of a Bon Jovi concert in Shanghai, China, September 10, 2015. U.S. rockers Bon Jovi have had their first ever tour of China unexpectedly canceled, the Chinese promoter said on Wednesday, and it was not immediately clear why, though a music video of six years ago shows scenes from the 1989 Tiananmen crackdown. REUTERS/Aly Song

A man stands next to a poster of a Bon Jovi concert, displayed inside an elevator in Shanghai, China, September 10, 2015. U.S. rockers Bon Jovi have had their first ever tour of China unexpectedly canceled, the Chinese promoter said on Wednesday, and it was not immediately clear why, though a music video of six years ago shows scenes from the 1989 Tiananmen crackdown. REUTERS/Aly Song

U.S. Senator Gary Peters (D-MI) boards an elevator as he departs the Senate floor at the U.S. Capitol in Washington September 8, 2015. President Barack Obama on Tuesday secured 41 votes in the U.S. Senate for the international nuclear deal with Iran, just enough to block a final vote on a measure of disapproval. REUTERS/Jonathan Ernst 

A cyclist climbs a street towards the Brussels' Palace of Justice (back C) and the Marolles elevator (L), an urban elevator connecting the lower and higher levels of the district, August 3, 2015. Once the last refuge of lepers and criminals, one of Brussels' quirkiest neighbourhoods teems with vintage furniture sellers, flea markets and linguistic invention. Les Marolles in French, or de Marollen in Dutch, stretches from the Gare du Midi, where Eurostar trains arrive, to the city's highest point, the Mont des Pendus or Galgenberg (Gallows Hill), where you can look down on half of Brussels. Picture taken August 3, 2015. REUTERS/Francois Lenoir 

A pedestrian uses the Marolles elevator, an urban elevator connecting the lower and higher levels of the district in Brussels, Belgium, August 5, 2015. Once the last refuge of lepers and criminals, one of Brussels' quirkiest neighbourhoods teems with vintage furniture sellers, flea markets and linguistic invention. Les Marolles in French, or de Marollen in Dutch, stretches from the Gare du Midi, where Eurostar trains arrive, to the city's highest point, the Mont des Pendus or Galgenberg (Gallows Hill), where you can look down on half of Brussels. Picture taken August 5, 2015. REUTERS/Francois Lenoir 

A pedestrian uses the Marolles elevator, an urban elevator connecting the lower and higher levels of the district in Brussels, Belgium, August 5, 2015. Once the last refuge of lepers and criminals, one of Brussels' quirkiest neighbourhoods teems with vintage furniture sellers, flea markets and linguistic invention. Les Marolles in French, or de Marollen in Dutch, stretches from the Gare du Midi, where Eurostar trains arrive, to the city's highest point, the Mont des Pendus or Galgenberg (Gallows Hill), where you can look down on half of Brussels. Picture taken on August 5, 2015. REUTERS/Francois Lenoir

Pedestrians walk on a bridge leading to the Marolles elevator, an urban elevator connecting the lower and higher levels of the district in Brussels, Belgium, August 3, 2015. Once the last refuge of lepers and criminals, one of Brussels' quirkiest neighbourhoods teems with vintage furniture sellers, flea markets and linguistic invention. Les Marolles in French, or de Marollen in Dutch, stretches from the Gare du Midi, where Eurostar trains arrive, to the city's highest point, the Mont des Pendus or Galgenberg (Gallows Hill), where you can look down on half of Brussels. Picture taken August 3, 2015. REUTERS/Francois Lenoir 

Tourists watch the cityscape from the Marolles elevator, an urban elevator connecting the lower and higher levels of the Brussels' district, Belgium, August 5, 2015. Once the last refuge of lepers and criminals, one of Brussels' quirkiest neighbourhoods teems with vintage furniture sellers, flea markets and linguistic invention. Les Marolles in French, or de Marollen in Dutch, stretches from the Gare du Midi, where Eurostar trains arrive, to the city's highest point, the Mont des Pendus or Galgenberg (Gallows Hill), where you can look down on half of Brussels. Picture taken on August 5, 2015. REUTERS/Francois Lenoir

Men use an elevator in a Tehran hotel, Iran August 23, 2015. REUTERS/Darren Staples 

Attendees at Wizard World Comic Con step out of an elevator in Chicago, Illinois, United States, August 22, 2015. Picture taken August 22, 2015. REUTERS/Jim Young

A general view of the public beach called "La Mirandole" which is seen below the villa owned by the king of Saudi Arabia after an elevator access was installed in Vallauris - Golf Juan, France, August 4, 2015. Unauthorized work initiated at the request of the Saudi royal family to build an access from the villa to the public beach, included laying a cement slab in the sand. Access to the small beach has been reopened to the public after the departure of Saudi Arabia's King Salman and his entourage. REUTERS/Jean-Pierre Amet 

A firefighting helicopter lifts off from the tarmac at Cal Fire's Sonoma County headquarters in Santa Rosa, California May 5, 2015. California Governor Jerry Brown has declared "wildfire awareness week," as drought conditions elevate the state's fire danger. REUTERS/Robert Galbraith 

Workers of Tokyo's Toshima ward office carry away a container holding a fragment of an unknown object after it was dug up from the ground near playground equipment at a park in Toshima ward, Tokyo April 24, 2015. Authorities in the Japanese capital have cordoned off the playground where high levels of radiation were detected this week, reviving concerns about nuclear contamination four years after the Fukushima disaster. Nuclear regulators measured elevated radiation levels on Thursday in the children's park in central Tokyo, city officials said, more than 250 km (155 miles) from the crippled Fukushima nuclear plant in northeast Japan. One area of the park registered 480 microsieverts per hour, or nearly half the recommended annual limit of exposure. REUTERS/Toru Hanai 

Downtown Seattle and the Alaskan Way Viaduct (R), an elevated, double-decked section of State Route 99, are visible as workers lift the machine head from Bertha, the world's largest tunnel-boring machine, from an access pit for repairs in Seattle, Washington March 30, 2015. Bertha stopped working in December 2013 after digging just 10 percent of a planned tunnel to replace an aging waterfront highway, leaving crews scrambling to determine how to rescue and repair the 2,000-ton drill. REUTERS/Jason Redmond 

Downtown Seattle and the Alaskan Way Viaduct, an elevated, double-decked section of State Route 99, are visible near the access pit where the cutting head from Bertha will be lifted out for repairs in Seattle, Washington March 9, 2015. Bertha, the world's largest tunnel-boring machine, stopped working in December 2013 after digging just 10 percent of a planned tunnel to replace an aging waterfront highway, leaving crews scrambling to determine how to rescue and repair the 2,000-ton drill. REUTERS/Jason Redmond (UNITED STATES - Tags: TRANSPORT SCIENCE TECHNOLOGY) 

Miners enter an elevator to go down at the Zasyadko coal mine in Donetsk March 4, 2015. Dozens of miners were trapped underground and feared dead after a blast on Wednesday at the coal mine in the eastern Ukrainian rebel stronghold of Donetsk. Mine officials said the explosion was most likely caused by gas and not linked to fighting at the nearby frontline in the war between Moscow-backed rebels and Ukraine government forces. The regional administration said the bodies of nine miners have been found so far but the fate of another 23 remains unknown. REUTERS/Baz Ratner (UKRAINE - Tags: POLITICS CONFLICT CIVIL UNREST ENERGY DISASTER TPX IMAGES OF THE DAY) 

Sonia Belen Contreras (R), 34, poses in a elevator after participating in a Miss Tattoo contest during a tattoo convention in the Andalusian capital of Seville February 14, 2015. REUTERS/Marcelo del Pozo (SPAIN - Tags: SOCIETY) 

New York City Mayor Bill de Blasio looks at Staten Island Chuck during a "Groundhog Day" event at the Staten Island Zoo in New York February 2, 2015. In New York City's take on the tradition, officials tried a new arms-length approach on a snowy, slushy Monday at the Staten Island Zoo. This time, a specially built rodent-sized elevator lifted the groundhog known as Staten Island Chuck into what zoo officials called "an innovative Groundhog Day viewing unit." Despite the shadows cast by the strong halogen lights pointing at the groundhog, the creature's handlers had warmer news than that coming out of Pennsylvania. REUTERS/Stephanie Keith (UNITED STATES - Tags: ENVIRONMENT SOCIETY POLITICS) 

New York City Mayor Bill de Blasio speaks during a "Groundhog Day" event at the Staten Island Zoo in New York February 2, 2015. In New York City's take on the tradition, officials tried a new arms-length approach on a snowy, slushy Monday at the Staten Island Zoo. This time, a specially built rodent-sized elevator lifted the groundhog known as Staten Island Chuck into what zoo officials called "an innovative Groundhog Day viewing unit." Despite the shadows cast by the strong halogen lights pointing at the groundhog, the creature's handlers had warmer news than that coming out of Pennsylvania. REUTERS/Stephanie Keith (UNITED STATES - Tags: ENVIRONMENT SOCIETY POLITICS) 

Groundhog Staten Island Chuck is seen during a "Groundhog Day" event at the Staten Island Zoo in New York February 2, 2015. In New York City's take on the tradition, officials tried a new arms-length approach on a snowy, slushy Monday at the Staten Island Zoo. This time, a specially built rodent-sized elevator lifted the groundhog known as Staten Island Chuck into what zoo officials called "an innovative Groundhog Day viewing unit." Despite the shadows cast by the strong halogen lights pointing at the groundhog, the creature's handlers had warmer news than that coming out of Pennsylvania. REUTERS/Stephanie Keith (UNITED STATES - Tags: ENVIRONMENT SOCIETY ANIMALS) 

Spanish model, Raquel Bonilla, 22, poses inside an elevator as she wears a creation by Myriam Hurtado during an urban photo shooting part of the Andalucia de Moda (Andalusia Fashion) in Seville, southern Spain November 4, 2014. REUTERS/Marcelo del Pozo (SPAIN - Tags: FASHION SOCIETY TPX IMAGES OF THE DAY) 

Smoke rises after an explosion in what witnesses said was an Israeli air strike in Gaza August 20, 2014. Israel launched its Gaza offensive on July 8 in response to a surge of rocket attacks by Gaza's dominant Hamas Islamists. Hamas said that Palestinians would continue confronting Israel until its blockade on Gaza was lifted. REUTERS/Ahmed Zakot (GAZA - Tags: POLITICS CONFLICT TPX IMAGES OF THE DAY) 

A sign is seen inside an elevator in a hotel used by media in Recife, one of the Brazilian towns where 2014 World Cup matches are taking place June 29, 2014. In a project called "On The Sidelines" Reuters photographers share pictures showing their own quirky and creative view of the 2014 World Cup in Brazil. REUTERS/Damir Sagolj (BRAZIL - Tags: SPORT SOCCER WORLD CUP SOCIETY TRAVEL) 

A floor cover depicting a soccer pitch is seen in an elevator in a hotel in Curitiba city June 17, 2014. In a project called 'On The Sidelines' Reuters photographers share pictures showing their own quirky and creative view of the 2014 World Cup in Brazil. REUTERS/Ivan Alvarado (BRAZIL - Tags: SPORT SOCCER WORLD CUP SOCIETY) 

A soccer pitch is sewn on the floor mat in a hotel elevator in Fortaleza June 15, 2014. In a project called 'On The Sidelines' Reuters photographers share pictures showing their own quirky and creative view of the 2014 World Cup in Brazil. REUTERS/Mike Blake (BRAZIL - Tags: SPORT SOCCER WORLD CUP) 

A boy carries an umbrella as he walks at the Alfama neighborhood in Lisbon March 27, 2014. REUTERS/Rafael Marchante (PORTUGAL - Tags: SOCIETY) 

Legendary Brazilian soccer player Pele tries to leave an elevator as the doors close after he spoke to journalists during an exhibition on the country's past World Cup participations entitled "Brazil, a country, a world" at the Ulysses Guimaraes Convention Center in Brasilia December 17, 2013. The exhibition will be opened to the public from December 18 to January 19, 2014, before touring the other host cities of the 2014 World Cup. REUTERS/Ueslei Marcelino (BRAZIL - Tags: SPORT SOCCER WORLD CUP TPX IMAGES OF THE DAY) 

Women carry pieces of a temporary roof to rebuild their houses after Cyclone Phailin hit Arjyapalli village, in Ganjam district in the eastern Indian state of Odisha October 14, 2013. A mass evacuation saved thousands of people from India's fiercest cyclone in 14 years, but aid workers warned a million would need help after their homes and livelihoods were destroyed. Cyclone Phailin was expected to dissipate within 36 hours, losing momentum on Sunday as it headed inland after making landfall from the Bay of Bengal, bringing winds of more than 200 kph (125 mph) that ripped apart tens of thousands of thatched huts, mangled power lines and tore down trees. REUTERS/Adnan Abidi (INDIA - Tags: ENVIRONMENT DISASTER TPX IMAGES OF THE DAY) 

Bicycle manufacturer Antonio de Sousa Vela (R), 83, climbs in a elevator at his Siera store in Oliveira do Bairro, near Aveiro August 10, 2013. De Sousa Vela began producing these bicycles in the 1950s, and today is the last classic bicycle manufacturer in Portugal. Nowadays, he manufactures an average of 30 bicycles per month, which are assembled by hand. REUTERS/Rafael Marchante (PORTUGAL - Tags: SOCIETY TRANSPORT) 

Clowns carry an image of the Virgin of Guadalupe as they take part in an annual pilgrimage outside the Basilica of Guadalupe in Mexico City July 24, 2013. Hundreds of colourfully dressed clowns took part in the annual event to thank the Virgin of Guadalupe for helping them find work through the year, local media reported. REUTERS/Henry Romero (MEXICO - Tags: SOCIETY ANNIVERSARY RELIGION) 

Employees enter an elevator inside the Central Telegraph Office in Mumbai July 16, 2013. Indian authorities closed the over 160 years old telegram service on Monday which was once a fundamental part of the country's communication system used for everything from taking care of official business to reporting deaths and marriages. BSNL has decided to discontinue it due to decline in usage for years. REUTERS/Danish Siddiqui (INDIA - Tags: BUSINESS SOCIETY EMPLOYMENT TELECOMS) 

A labourer carrying tomatoes walks along a roadside near a wholesale vegetable market in the old quarters of Delhi May 14, 2013. India's headline inflation slowed for a third straight month in April to 4.89 percent, a level seen comfortable for the central bank to persist with monetary easing to revive a flagging economy. REUTERS/Anindito Mukherjee (INDIA - Tags: BUSINESS EMPLOYMENT) 

Rescue workers carry injured Pakistani cricketer-turned-politician Imran Khan, who is also chairman of political party Pakistan Tehreek-e-Insaf (PTI), after he fell from a makeshift elevator during his election campaign rally in Lahore May 7, 2013. Pakistan's parliamentary elections are scheduled to be held on May 11. REUTERS/ Mohsin Raza (PAKISTAN - Tags: POLITICS ELECTIONS TPX IMAGES OF THE DAY) 

Visitors take pictures as they are lifted in a glass gondola to the top of the Globe Arena in Sweden's capital Stockholm May 1, 2013. Together with the Hartwall Arena in Helsinki, Finland, the world's largest spheric building (100 metres/360 ft diameter and 85 metres/278 ft. height) hosts the 2013 IIHF Ice Hockey World Championship from May 3 to 19. REUTERS/Arnd Wiegmann (SWEDEN - Tags: SPORT ICE HOCKEY CITYSPACE) 

A man collect shellfish on a beach near Diani Beach on the Indian Ocean coast of Kenya, some 30 km (19 miles) south of Mombasa, April 9, 2013. REUTERS/Goran Tomasevic (KENYA - Tags: SOCIETY) 

Malini Agarwal (R), blogger-in-chief of missmalini.com, and her friend inspect themslves in an elevator mirror as they touch up their make-up during a visit to a nightclub in Mumbai, January 20, 2013. Agarwal, 35, exemplifies what aspirational India is all about - She's bubbly, energetic, and describes herself as "India's blogging princess" and a "social media Jedi". She's been called "without a doubt, India's most famous blogger". Her blog, missmalini.com, gets over 250,000 unique visitors a month. It provides a steady diet of Bollywood gossip, fashion, food and entertainment to a legion of followers. Picture taken January 20, 2013. REUTERS/Vivek Prakash (INDIA - Tags: SCIENCE TECHNOLOGY SOCIETY MEDIA)

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Miners wait to begin their shift in Hungary's last remaining deep-cast coal mine at Markushegy, 70 km west of Budapest, January 23, 2013. Hungary secured EU regulatory approval on Wednesday for a 42.25 billion forint ($191 million, 144 million euro) grant to shut down the uncompetitive coal mine, operated by Vertes Power Plant, in the next two years. REUTERS/Laszlo Balogh (HUNGARY - Tags: ENERGY ENVIRONMENT BUSINESS EMPLOYMENT POLITICS) 

A woman enters an elevator in a nursing home as walking aid chairs are parked outside the residence's chapel in Hanover January 20, 2013. REUTERS/Kai Pfaffenbach (GERMANY - Tags: SOCIETY) 

Plates used by labourers lie on the ground at an illegal oil refinery site near river Nun in Nigeria's oil state of Bayelsa November 27, 2012. Thousands of people in Nigeria engage in a practice known locally as 'oil bunkering' - hacking into pipelines to steal crude then refining it or selling it abroad. The practice, which leaves oil spewing from pipelines for miles around, managed to lift around a fifth of Nigeria's two million barrel a day production last year according to the finance ministry. Picture taken November 27, 2012. REUTERS/Akintunde Akinleye (NIGERIA - Tags: BUSINESS ENVIRONMENT SOCIETY INDUSTRIAL ENERGY) ATTENTION EDITORS - PICTURE 17 OF 28 FOR PACKAGE 'NIGERIA'S ILLEGAL OIL BUNKERERS'. SEARCH 'OIL BUNKERING' FOR ALL IMAGES 

U.S. Senator Tom Coburn (R-OK) boards an elevator at the U.S. Capitol in Washington December 31, 2012. Taxes were on track to rise for many Americans this week unless U.S. lawmakers could cut a last-minute deal on Monday to avoid the "fiscal cliff," an outcome that seemed unlikely, but still possible. REUTERS/Jonathan Ernst (UNITED STATES - Tags: POLITICS BUSINESS) 

A boy is rescued from the Monorail after it stopped between stations in central Sydney September 24, 2012. Twenty-eight passengers, most of them international tourists, were trapped on the monorail after it stopped between stations, Nobody was injured during the incident according to the police. REUTERS/Daniel Munoz (AUSTRALIA - Tags: SOCIETY DISASTER) 

An Andean woman stands at the counter of a foreign fast food restaurant at a shopping mall in Huancayo city, in Peru's central Andes, August 17, 2012. The country's provinces, long ignored as unprofitable backwaters by elites in Lima, are booming as foreign and domestic companies target an emerging class of consumers. Two decades ago, Huancayo - a city of 400,000 that sits in a farming valley 10,731 feet above sea level (3,271 meters) - was overrun with leftist rebels. Now, it has a shiny new shopping center with all the trappings of a typical mall in the United States, right down to the elevator music, prickly Rent-A-Cops, and an arcade called Happyland. Peru's economy is the fastest-growing in Latin America. Picture taken August 17, 2012. To match Insight PERU-ECONOMY/PROVINCES REUTERS/Janine Costa (PERU - Tags: BUSINESS FOOD) 

People leave the Hammetschwand Lift, Europe's highest exterior elevator, to reach the lookout point Hammetschwand at the Bürgenstock plateau overlooking Lake Lucerne August 19, 2012. The lift transports passengers 153 metres (502 ft) up to the summit of the Hammetschwand (1,132 metres/3,714 ft altitude) in less than one minute. On the right is Rigi mountain (1,797 metres/5,896 ft altitude). REUTERS/Arnd Wiegmann (SWITZERLAND - Tags: ENVIRONMENT SOCIETY TRAVEL) BEST QUALITY AVAILABLE 

A general view shows the Hammetschwand Lift, Europe's highest exterior elevator and the lookout point Hammetschwand at the Bürgenstock plateau overlooking Lake Lucerne August 19, 2012. The lift transports passengers 153 metres (502 ft) up to the summit of the Hammetschwand (1,132 metres/3,714 ft altitude) in less than one minute. REUTERS/Arnd Wiegmann (SWITZERLAND - Tags: ENVIRONMENT SOCIETY TRAVEL) 

People wait for the Hammetschwand Lift, Europe's highest exterior elevator, at the lookout point Hammetschwand at the Bürgenstock plateau overlooking Lake Lucerne August 19, 2012. The lift transports passengers 153 metres (502 ft) up to the summit of the Hammetschwand (1,132 metres/3,714 ft altitude) in less than one minute. On the right is Rigi mountain (1,797 metres/5,896 ft altitude). REUTERS/Arnd Wiegmann (SWITZERLAND - Tags: ENVIRONMENT SOCIETY TRAVEL) 

A man takes a picture as he stands beside the Hammetschwand Lift, Europe's highest exterior elevator, at the lookout point Hammetschwand at the Bürgenstock plateau overlooking Lake Lucerne August 19, 2012. The lift transports passengers 153 metres (502 ft) up to the summit of the Hammetschwand (1,132 metres/3,714 ft altitude) in less than one minute. The city of Luzern is pictured in the background. REUTERS/Arnd Wiegmann (SWITZERLAND - Tags: ENVIRONMENT SOCIETY TRAVEL CITYSPACE) 

A man takes a picture as he stands beside the Hammetschwand Lift, Europe's highest exterior elevator, at the lookout point Hammetschwand at the Bürgenstock plateau overlooking Lake Lucerne August 19, 2012. The lift transports passengers 153 metres (502 ft) up to the summit of the Hammetschwand (1,132 metres/3,714 ft altitude) in less than one minute. The city of Luzern is pictured in the background. REUTERS/Arnd Wiegmann (SWITZERLAND - Tags: ENVIRONMENT SOCIETY TRAVEL CITYSPACE) 

People wait for the Hammetschwand Lift, Europe's highest exterior elevator, at the lookout point Hammetschwand at the Bürgenstock plateau overlooking Lake Lucerne August 19, 2012. The lift transports passengers 153 metres (502 ft) up to the summit of the Hammetschwand (1,132 metres/3,714 ft altitude) in less than one minute. On the right is Rigi mountain (1,797 metres/5,896 ft altitude). REUTERS/Arnd Wiegmann (SWITZERLAND - Tags: ENVIRONMENT SOCIETY TRAVEL)