People visit the archaeological site of Delphi, a UNESCO World Heritage site, in Delphi, Greece, November 17, 2022. REUTERS/Alkis Konstantinidis 

A man visits the archaeological site of Delphi, a UNESCO World Heritage site, in Delphi, Greece, November 17, 2022. REUTERS/Alkis Konstantinidis 

People visit the archaeological site of Delphi, a UNESCO World Heritage site, in Delphi, Greece, November 17, 2022. REUTERS/Alkis Konstantinidis 

People visit the archaeological site of Delphi, a UNESCO World Heritage site, in Delphi, Greece, November 17, 2022. REUTERS/Alkis Konstantinidis 

A tourist visits the archaeological site of Delphi, a UNESCO World Heritage site, in Delphi, Greece, November 17, 2022. REUTERS/Alkis Konstantinidis 

A view of the archaeological site of Delphi, a UNESCO World Heritage site, in Delphi, Greece, November 17, 2022. REUTERS/Alkis Konstantinidis 

People visit the archaeological site of Delphi, a UNESCO World Heritage site, in Delphi, Greece, November 17, 2022. REUTERS/Alkis Konstantinidis 

People visit the archaeological site of Delphi, a UNESCO World Heritage site, in Delphi, Greece, November 17, 2022. REUTERS/Alkis Konstantinidis 

A bird is seen at the archaeological site of Delphi, a UNESCO World Heritage site, in Delphi, Greece, November 17, 2022. REUTERS/Alkis Konstantinidis 

Visitors view one of the memorial walls in memory of those who died in the South African Wars, the World Wars, the anti-apartheid struggle and other South African conflicts, at Freedom Park in Pretoria, South Africa October 16, 2022. REUTERS/Marius Bosch 

An aerial view shows Masada, a UNESCO World Heritage site in southern Israel, September 16, 2022. REUTERS/Ilan Rosenberg 

U.N. Secretary-General Antonio Guterres and Pakistan's Minister of Foreign Affairs Bilawal Bhutto Zardari visit Mohenjo Daro, World Heritage site, following rains and floods during the monsoon season in Larkana, Pakistan September 10, 2022. REUTERS/Akhtar Soomro 

Britain's Prince Charles talks with Heritage and Engagement Manager Andy Cuthbertson and Chair of New Lanark board of Trustees James Pow during a visit to the UNESCO World Heritage site of New Lanark to see an example of a purpose-built 18th century mill village in Lanarkshire, Scotland, Britain September 7, 2022. Jane Barlow/Pool via REUTERS 

Britain's Prince Charles visits the UNESCO World Heritage site of New Lanark to see an example of a purpose-built 18th century mill village in Lanarkshire, Scotland, Britain September 7, 2022. Jane Barlow/Pool via REUTERS 

Britain's Prince Charles greets people during a visit to the UNESCO World Heritage site of New Lanark to see an example of a purpose-built 18th century mill village in Lanarkshire, Scotland, Britain September 7, 2022. Jane Barlow/Pool via REUTERS 

Britain's Prince Charles visits the UNESCO World Heritage site of New Lanark to see an example of a purpose-built 18th century mill village in Lanarkshire, Scotland, Britain September 7, 2022. Jane Barlow/Pool via REUTERS 

Britain's Prince Charles gestures during a visit to the UNESCO World Heritage site of New Lanark to see an example of a purpose-built 18th century mill village in Lanarkshire, Scotland, Britain September 7, 2022. Jane Barlow/Pool via REUTERS 

Britain's Prince Charles waves during a visit to the UNESCO World Heritage site of New Lanark to see an example of a purpose-built 18th century mill village in Lanarkshire, Scotland, Britain September 7, 2022. Jane Barlow/Pool via REUTERS 

Britain's Prince Charles talks with Heritage and Engagement Manager Andy Cuthbertson and Chair of New Lanark board of Trustees James Pow during a visit to the UNESCO World Heritage site of New Lanark to see an example of a purpose-built 18th century mill village in Lanarkshire, Scotland, Britain September 7, 2022. Jane Barlow/Pool via REUTERS 

Britain's Prince Charles signs the visitor book during a visit to the UNESCO World Heritage site of New Lanark to see an example of a purpose-built 18th century mill village in Lanarkshire, Scotland, Britain September 7, 2022. Jane Barlow/Pool via REUTERS 

Britain's Prince Charles visits the UNESCO World Heritage site of New Lanark to see an example of a purpose-built 18th century mill village in Lanarkshire, Scotland, Britain September 7, 2022. Jane Barlow/Pool via REUTERS 

A pick-up-man for the stock contractor leads the bucking horses out to pasture after the Writing-On-stone Rodeo at Writing-On-Stone Rodeo during the first rodeo held since the coronavirus disease (COVID-19) pandemic in the World Heritage Site location of Writing-On-Stone Provincial Park, Alberta, Canada, July 31, 2022. REUTERS/Leah Hennel TPX IMAGES OF THE DAY 

After competing in the Writing-On-Stone Rodeo, Ryder Nelson cools off in the Milk River during the first Writing-On-Stone Rodeo held since the coronavirus disease (COVID-19) pandemic in the World Heritage Site location of Writing-On-Stone Provincial Park, Alberta, Canada, July 31, 2022. REUTERS/Leah Hennel 

Gage Hillis, of Stoughton, Sask., after he competes in junior bull riding during the first rodeo held since the coronavirus disease (COVID-19) pandemic in the World Heritage Site location of Writing-On-Stone Provincial Park, Alberta, Canada, July 31, 2022. REUTERS/Leah Hennel 

Sandstone cliffs and the Milk River frame the rodeo grounds at Writing-On-Stone Rodeo during the first rodeo held since the coronavirus disease (COVID-19) pandemic in the World Heritage Site location of Writing-On-Stone Provincial Park, Alberta, Canada July 31, 2022. REUTERS/Leah Hennel 

Ty Amen helps Ryder Nelson, left, with his boots after they cooled off in the Milk River during the first Writing-On-Stone Rodeo held since the coronavirus disease (COVID-19) pandemic in the World Heritage Site location of Writing-On-Stone Provincial Park, Alberta, Canada July 31, 2022. REUTERS/Leah Hennel 

Gage Hillis, of Stoughton, Sask.,after he competes in junior bull riding during the first rodeo held since the coronavirus disease (COVID-19) pandemic in the World Heritage Site location of Writing-On-Stone Provincial Park, Alberta, Canada, July 31, 2022. REUTERS/Leah Hennel 

A pick-up-man for the stock contractor leads the bucking horses out to pasture after the Writing-On-stone Rodeo at the World Heritage Site location of Writing-On-Stone Provincial Park, Alberta, Canada, July 31, 2022. REUTERS/Leah Hennel 

After competing in the Writing-On-Stone Rodeo, Ryder Nelson, left, Shaylynn Amen and her brother Ty Amen cool off in the Milk River during the first Writing-On-Stone Rodeo held since the coronavirus disease (COVID-19) pandemic in the World Heritage Site location of Writing-On-Stone Provincial Park, Alberta, Canada July 31, 2022. REUTERS/Leah Hennel 

After competing in team roping at the Writing-On-Stone Rodeo, Ty Amen, left, and Ryder Nelson cool off in the Milk River during the first Writing-On-Stone Rodeo held since the coronavirus disease (COVID-19) pandemic in the World Heritage Site location of Writing-On-Stone Provincial Park, Alberta, Canada July 31, 2022. REUTERS/Leah Hennel 

After competing in team roping at the Writing-On-Stone Rodeo, Ty Amen, left, and Ryder Nelson cool off in the Milk River during the first Writing-On-Stone Rodeo held since the coronavirus disease (COVID-19) pandemic in the World Heritage Site location of Writing-On-Stone Provincial Park, Alberta, Canada July 31, 2022. REUTERS/Leah Hennel 

Kaden Piper of Stoughton, Saskatchewan makes sure his grip is tight before nodding to open the gate as he competes in junior bull riding during the first Writing-On-Stone Rodeo held since the coronavirus disease (COVID-19) pandemic in the World Heritage Site location of Writing-On-Stone Provincial Park, Alberta, Canada July 31, 2022. REUTERS/Leah Hennel 

Payten Garber of Foremost, Alberta competes in junior barrel race during the first Writing-On-Stone Rodeo held since the coronavirus disease (COVID-19) pandemic in the World Heritage Site location of Writing-On-Stone Provincial Park, Alberta, Canada July 31, 2022. REUTERS/Leah Hennel 

Kaden Piper of Stoughton, Saskatchewan, prepares for his ride before competing in junior bull riding during the first Writing-On-Stone Rodeo held since the coronavirus disease (COVID-19) pandemic in the World Heritage Site location of Writing-On-Stone Provincial Park, Alberta, Canada July 31, 2022. REUTERS/Leah Hennel 

Junior bull riders prepare for their ride during the first Writing-On-Stone Rodeo held since the coronavirus disease (COVID-19) pandemic in the World Heritage Site location of Writing-On-Stone Provincial Park, Alberta, Canada July 31, 2022. REUTERS/Leah Hennel 

Stetson Whitney of Cochrane, Alberta stretches before competing in steer riding during the first Writing-On-Stone Rodeo held since the coronavirus disease (COVID-19) pandemic in the World Heritage Site location of Writing-On-Stone Provincial Park, Alberta, Canada July 31, 2022. REUTERS/Leah Hennel 

Taylor Giles, of Rockyview County, Alberta races out of the gate in ladies barrel racing during the first Writing-On-Stone Rodeo held since the coronavirus disease (COVID-19) pandemic in the World Heritage Site location of Writing-On-Stone Provincial Park, Alberta, Canada, July 31, 2022. REUTERS/Leah Hennel 

Shaylynn Amen, of Wrentham, Alberta races to the finish in ladies barrel racing during the first Writing-On-Stone Rodeo held since the coronavirus disease (COVID-19) pandemic in the World Heritage Site location of Writing-On-Stone Provincial Park, Alberta, Canada, July 31, 2022. REUTERS/Leah Hennel 

Shaylynn Amen, of Wrentham, Alberta races to the finish in ladies barrel racing during the first Writing-On-Stone Rodeo held since the coronavirus disease (COVID-19) pandemic in the World Heritage Site location of Writing-On-Stone Provincial Park, Alberta, Canada July 31, 2022. REUTERS/Leah Hennel 

Cletus Big Throat Jr., of Magrath, Alberta is bucked off Yellow Jacket in the saddle bronc event during the first Writing-On-Stone Rodeo held since the coronavirus disease (COVID-19) pandemic in the World Heritage Site location of Writing-On-Stone Provincial Park, Alberta, Canada July 31, 2022. REUTERS/Leah Hennel TPX IMAGES OF THE DAY 

Cletus Big Throat Jr., of Magrath, Alberta is bucked off Yellow Jacket in the saddle bronc event during the first Writing-On-Stone Rodeo held since the coronavirus disease (COVID-19) pandemic in the World Heritage Site location of Writing-On-Stone Provincial Park, Alberta, Canada July 31, 2022. REUTERS/Leah Hennel/Leah Hennel 

Ellie Havens of Madden, Alta., warms up before competing in junior breakaway roping during the first Writing-On-Stone Rodeo held since the coronavirus disease (COVID-19) pandemic in the World Heritage Site location of Writing-On-Stone Provincial Park, Alberta, Canada July 31, 2022. REUTERS/Leah Hennel 

The opening of the first Writing-On-Stone Rodeo held since the coronavirus disease (COVID-19) pandemic in the World Heritage Site location of Writing-On-Stone Provincial Park, Alberta, Canada July 31, 2022. REUTERS/Leah Hennel 

A junior steer rider backdropped by the sandstone cliffs at the Writing-On-Stone Rodeo during the first Writing-On-Stone Rodeo held in the World Heritage Site location of Writing-On-Stone Provincial Park since the coronavirus disease (COVID-19) pandemic, in Alberta, Canada July 31, 2022. REUTERS/Leah Hennel 

Payten Garber of Foremost, Alberta ride a horse during the first Writing-On-Stone Rodeo held in the World Heritage Site location of Writing-On-Stone Provincial Park since the coronavirus disease (COVID-19) pandemic, in Alberta, Canada July 31, 2022. REUTERS/Leah Hennel 

People walk near the pile of garbage dumped along the street in Bashantapur Durbar Square, a UNESCO world heritage site, as locals from a village near the dumping site protest against garbage being dumped in their area by obstructing garbage trucks from reaching the dumping site, in Kathmandu, Nepal June 7, 2022. Picture taken June 7, 2022. REUTERS/Navesh Chitrakar 

The Employment Office "Amt fuer Arbeit" designed by Bauhaus architect Walter Gropius, one of UNESCO world heritage sites of the eastern German city of Dessau, is pictured in Dessau, Germany, March 5, 2022. Picture taken March 5, 2022. REUTERS/Wolfgang Rattay 

The Employment Office "Amt fuer Arbeit" designed by Bauhaus architect Walter Gropius, one of UNESCO world heritage sites of the eastern German city of Dessau, is pictured in Dessau, Germany, March 5, 2022. Picture taken March 5, 2022. REUTERS/Wolfgang Rattay 

Britain's Prince William and Catherine, Duchess of Cambridge visit the World Heritage Site visitor centre in Pontypool to learn more about the history of Blaenavon and the importance of the Ambassador programme, in Pontypool, Wales, Britain March 1, 2022. Arthur Edwards/Pool via REUTERS 

Catherine, Duchess of Cambridge visits the World Heritage Site visitor centre in Pontypool to learn more about the history of Blaenavon and the importance of the Ambassador programme, in Pontypool, Wales, Britain March 1, 2022. Arthur Edwards/Pool via REUTERS 

Workers work to rebuild a temple damaged during the 2015 earthquake, at Bashantapur Durbar Square, a UNESCO world heritage site in Kathmandu, Nepal February 9, 2022. REUTERS/Navesh Chitrakar 

A man carries butter lamps offered by the devotees at Boudhanath Stupa, a UNESCO's world heritage site famous among Buddhist devotees and tourists, in Kathmandu, Nepal, February 2, 2022. REUTERS/Navesh Chitrakar TPX IMAGES OF THE DAY 

A general view of Boudhanath Stupa, a UNESCO's world heritage site famous among Buddhist devotees and tourists, is pictured through the balcony of a monastery in Kathmandu, Nepal, February 2, 2022. REUTERS/Navesh Chitrakar 

A Buddhist monk walks out of a café at Boudhanath Stupa, a UNESCO's world heritage site famous among Buddhist devotees and tourists, in Kathmandu, Nepal, February 2, 2022. REUTERS/Navesh Chitrakar 

A view shows the archaeological site of Tel Al-Sultan, in Jericho, in the Israeli-occupied West Bank, January 30, 2022. Picture taken January 30, 2022. Picture taken with a drone. REUTERS/Mohamad Torokman 

A view shows the archaeological site of Tel Al-Sultan, in Jericho, in the Israeli-occupied West Bank, January 30, 2022. Picture taken January 30, 2022. REUTERS/Mohamad Torokman 

A view shows the archaeological site of Tel Al-Sultan, in Jericho, in the Israeli-occupied West Bank, January 30, 2022. Picture taken January 30, 2022. Picture taken with a drone. REUTERS/Mohamad Torokman 

A view shows the archaeological site of Tel Al-Sultan, in Jericho, in the Israeli-occupied West Bank, January 30, 2022. Picture taken January 30, 2022. Picture taken with a drone. REUTERS/Mohamad Torokman 

A view shows the archaeological site of Tel Al-Sultan, in Jericho, in the Israeli-occupied West Bank, January 30, 2022. Picture taken January 30, 2022. Picture taken with a drone. REUTERS/Mohamad Torokman