The sun sets behind storm clouds as the Parthenon temple is seen atop the Acropolis hill in Athens, Greece, June 22, 2020. Picture taken June 22, 2020. REUTERS/Alkis Konstantinidis

The sun sets behind storm clouds as the Parthenon temple is seen atop the Acropolis hill in Athens, Greece, June 22, 2020. Picture taken June 22, 2020. REUTERS/Alkis Konstantinidis

A Culture ministry employee wearing a face shield stands in front of the Parthenon temple as the Acropolis archaeological site opens to visitors, following the easing of measures against the spread of the coronavirus disease (COVID-19), in Athens, Greece, May 18, 2020. REUTERS/Alkis Konstantinidis

A Culture ministry employee wearing a face mask stands in front of the Parthenon temple as the Acropolis archaeological site opens to visitors, following the easing of measures against the spread of the coronavirus disease (COVID-19), in Athens, Greece, May 18, 2020. REUTERS/Alkis Konstantinidis

A social distancing marker reads "Stay Here!" with the Parthenon temple seen in the background, as the Acropolis archaeological site opens to visitors, following the easing of measures against the spread of the coronavirus disease (COVID-19), in Athens, Greece, May 18, 2020. REUTERS/Alkis Konstantinidis

A Culture ministry employee wearing a face mask stands in front of the Parthenon temple as the Acropolis archaeological site opens to visitors, following the easing of measures against the spread of the coronavirus disease (COVID-19), in Athens, Greece, May 18, 2020. REUTERS/Alkis Konstantinidis

A visitor takes a photo of the Parthenon temple next to a social distancing marker, as the Acropolis archaeological site opens to visitors, following the easing of measures against the spread of the coronavirus disease (COVID-19), in Athens, Greece, May 18, 2020. REUTERS/Alkis Konstantinidis

Visitors walk past the Parthenon temple as the Acropolis archaeological site opens to visitors, following the easing of measures against the spread of the coronavirus disease (COVID-19, in Athens, Greece, May 18, 2020. REUTERS/Alkis Konstantinidis

Visitors wearing protective face masks walk past the Parthenon temple as the Acropolis archaeological site opens to visitors, following the easing of measures against the spread of the coronavirus disease (COVID-19), in Athens, Greece, May 18, 2020. REUTERS/Alkis Konstantinidis

Visitors walk past the Parthenon temple as the Acropolis archaeological site opens to visitors, following the easing of measures against the spread of the coronavirus disease (COVID-19, in Athens, Greece, May 18, 2020. REUTERS/Alkis Konstantinidis

A Culture ministry employee wearing a face mask stands in front of the Parthenon temple as the Acropolis archaeological site opens to visitors, following the easing of measures against the spread of the coronavirus disease (COVID-19), in Athens, Greece, May 18, 2020. REUTERS/Alkis Konstantinidis

A Culture ministry employee wearing a face mask stands in front of the Parthenon temple as the Acropolis archaeological site opens to visitors, following the easing of measures against the spread of the coronavirus disease (COVID-19), in Athens, Greece, May 18, 2020. REUTERS/Alkis Konstantinidis

Visitors wearing protective face masks walk past the Parthenon temple as the Acropolis archaeological site opens to visitors, following the easing of measures against the spread of the coronavirus disease (COVID-19), in Athens, Greece, May 18, 2020. REUTERS/Alkis Konstantinidis

A social distancing marker reads "Stay Here!" with the Parthenon temple seen in the background, as the Acropolis archaeological site opens to visitors, following the easing of measures against the spread of the coronavirus disease (COVID-19), in Athens, Greece, May 18, 2020. REUTERS/Alkis Konstantinidis

A visitor takes a photo of the Parthenon temple next to a social distancing marker, as the Acropolis archaeological site opens to visitors, following the easing of measures against the spread of the coronavirus disease (COVID-19), in Athens, Greece, May 18, 2020. REUTERS/Alkis Konstantinidis

A Culture ministry employee wearing a face shield stands in front of the Parthenon temple as the Acropolis archaeological site opens to visitors, following the easing of measures against the spread of the coronavirus disease (COVID-19), in Athens, Greece, May 18, 2020. REUTERS/Alkis Konstantinidis

Fireworks explode over the Parthenon temple to celebrate the Greek Orthodox Easter, following the coronavirus disease (COVID-19) outbreak in Athens, Greece, April 19, 2020. REUTERS/Alkis Konstantinidis

Fireworks explode over the Parthenon temple to celebrate the Greek Orthodox Easter, following the coronavirus disease (COVID-19) outbreak in Athens, Greece, April 19, 2020. REUTERS/Alkis Konstantinidis

Fireworks explode over the Parthenon temple to celebrate the Greek Orthodox Easter, following the coronavirus disease (COVID-19) outbreak in Athens, Greece, April 19, 2020. REUTERS/Alkis Konstantinidis

Flowers bloom with the Parthenon temple seen in the background, during the coronavirus disease (COVID-19) outbreak, in Athens, Greece, April 14, 2020. REUTERS/Alkis Konstantinidis

A view of the Parthenon temple, during the coronavirus disease (COVID-19) outbreak, in Athens, Greece, April 14, 2020. REUTERS/Alkis Konstantinidis

A cat sits at an empty entrance of the Parthenon temple atop the Acropolis hill, as the spread of the coronavirus disease (COVID-19) continues, in Athens, Greece, April 4, 2020. Picture taken April 4, 2020. REUTERS/Goran Tomasevic

People make their way on a pedestrian street as the Parthenon temple is seen atop the Acropolis hill, during an outbreak of the coronavirus disease (COVID-19), in Athens, Greece, March 22, 2020. REUTERS/Alkis Konstantinidis

People make their way on a pedestrian street as the Parthenon temple is seen atop the Acropolis hill, during an outbreak of the coronavirus disease (COVID-19), in Athens, Greece, March 22, 2020. REUTERS/Alkis Konstantinidis

A man walks with his dogs next to a cafe that is closed to customers as a precaution against the spread of the coronavirus disease (COVID-19), as the Parthenon Temple is seen atop the ancient Acropolis hill in Athens, Greece, March 17, 2020. REUTERS/Costas Baltas

Tourists wear protective masks as they enjoy the view of the Parthenon temple atop the Acropolis hill archaeological site, that is closed to the public as a precaution against the spread of the coronavirus (COVID-19), in Athens, Greece, March 15, 2020. REUTERS/Costas Baltas

The Parthenon temple is seen atop the empty Acropolis hill archaeological site, that is closed to the public as a precaution against the spread of the coronavirus (COVID-19), in Athens, Greece, March 15, 2020. REUTERS/Costas Baltas

The Parthenon temple is seen during sunset atop the Acropolis hill archaeological site, that is closed to visitors as a precaution against the spread of the coronavirus disease (COVID-19), in Athens, Greece, March 14, 2020. REUTERS/Alkis Konstantinidis

Visitors wear protective face masks as they walk past the ancient Parthenon temple at the archaeological site of the Acropolis in Athens, Greece, March 13, 2020. REUTERS/Costas Baltas

People wear protective face masks as they walk past the ancient Parthenon temple at the archaeological site of the Acropolis in Athens, Greece, March 13, 2020. REUTERS/Costas Baltas

A visitor wears a protective face mask as she walks past the ancient Parthenon temple at the archaeological site of the Acropolis in Athens, Greece, March 13, 2020. REUTERS/Costas Baltas

People stand in front of the ancient Parthenon temple as they visit the archaeological site of the Acropolis in Athens, Greece, March 13, 2020. REUTERS/Costas Baltas

A full snow moon rises next to the Parthenon temple at the archaeological site of the Acropolis in Athens, Greece, February 9, 2020. REUTERS/Alkis Konstantinidis

An original sculpture of the frieze of the Parthenon temple is exhibited at the Parthenon Gallery of the Acropolis Museum, in Athens, Greece, January 29, 2020. Picture taken January 29, 2020. REUTERS/Alkis Konstantinidis

Visitors take pictures of the Parthenon temple seen in the background, as they visit the Parthenon Gallery of the Acropolis Museum, in Athens, Greece, January 29, 2020. Picture taken January 29, 2020. REUTERS/Alkis Konstantinidis

Visitors look at original sculptures and plaster cast copies of the frieze of the Parthenon temple at the Parthenon Gallery of the Acropolis Museum, in Athens, Greece, January 29, 2020. Picture taken January 29, 2020. REUTERS/Alkis Konstantinidis

An original sculpture from the Parthenon frieze temple is seen partially reconstructed by plaster, at the Parthenon Gallery of the Acropolis Museum, in Athens, Greece, January 29, 2020. Picture taken January 29, 2020. REUTERS/Alkis Konstantinidis

People visit the Parthenon Gallery of the Acropolis Museum, where original sculptures and plaster cast copies of the frieze of the Parthenon temple are exhibited, in Athens, Greece, January 29, 2020. Picture taken January 29, 2020. REUTERS/Alkis Konstantinidis

Visitors look at original sculptures and plaster cast copies of the frieze of the Parthenon temple, as they visit the Parthenon Gallery of the Acropolis Museum, in Athens, Greece, January 29, 2020. Picture taken January 29, 2020. REUTERS/Alkis Konstantinidis

A man visits the Parthenon Gallery of the Acropolis Museum, where original sculptures and plaster cast copies of the frieze of the Parthenon temple are exhibited, in Athens, Greece, January 29, 2020. Picture taken January 29, 2020. REUTERS/Alkis Konstantinidis

A woman takes a photo as she visits the Parthenon Gallery of the Acropolis Museum, where original sculptures and plaster cast copies of the frieze of the Parthenon temple are exhibited, in Athens, Greece, January 29, 2020. Picture taken January 29, 2020. REUTERS/Alkis Konstantinidis

Fireworks explode over the ancient Parthenon temple atop the Acropolis hill during New Year's day celebrations in Athens, Greece, January 1, 2020. REUTERS/Costas Baltas

Fireworks explode over the ancient Parthenon temple atop the Acropolis hill during New Year's day celebrations in Athens, Greece, January 1, 2020. REUTERS/Costas Baltas

Fireworks explode over the ancient Parthenon temple atop the Acropolis hill during New Year's day celebrations in Athens, Greece, January 1, 2020. REUTERS/Costas Baltas

Fireworks explode over the ancient Parthenon temple atop the Acropolis hill during New Year's day celebrations in Athens, Greece, January 1, 2020. REUTERS/Costas Baltas

A girl passes through an illuminated Christmas star as the Parthenon temple is seen in the background, in Athens, Greece December 23, 2019. REUTERS/Costas Baltas

Greek Presidential Guards, known as Evzones, present arms during a ceremony for the 75th anniversary of the Liberation of Athens from the Nazi occupation, with the Parthenon temple seen in the background, atop the Acropolis hill in Athens, Greece, October 12, 2019. REUTERS/Alkis Konstantinidis

Greek Presidential Guards, known as Evzones, form a guard of honour during a ceremony for the 75th anniversary of the Liberation of Athens from the Nazi occupation, with the Parthenon temple seen in the background, atop the Acropolis hill in Athens, Greece, October 12, 2019. REUTERS/Alkis Konstantinidis

Greek Presidential Guards, known as Evzones, present arms during a ceremony for the 75th anniversary of the Liberation of Athens from the Nazi occupation, with the Parthenon temple seen in the background, atop the Acropolis hill in Athens, Greece, October 12, 2019. REUTERS/Alkis Konstantinidis

Greek Presidential Guards, known as Evzones, form a guard of honour during a ceremony for the 75th anniversary of the Liberation of Athens from the Nazi occupation, with the Parthenon temple seen in the background, atop the Acropolis hill in Athens, Greece, October 12, 2019. REUTERS/Alkis Konstantinidis

Women dressed in traditional costumes carry a historical Greek flag during a ceremony for the 75th anniversary of the Liberation of Athens from the Nazi occupation, with the Parthenon temple seen in the background, atop the Acropolis hill in Athens, Greece, October 12, 2019. REUTERS/Alkis Konstantinidis

Greek Presidential Guards, known as Evzones, form a guard of honour during a ceremony for the 75th anniversary of the Liberation of Athens from the Nazi occupation, with the Parthenon temple seen in the background, atop the Acropolis hill in Athens, Greece, October 12, 2019. REUTERS/Alkis Konstantinidis

Greek Presidential Guards, known as Evzones, present arms during a ceremony for the 75th anniversary of the Liberation of Athens from the Nazi occupation, with the Parthenon temple seen in the background, atop the Acropolis hill in Athens, Greece, October 12, 2019. REUTERS/Alkis Konstantinidis

The Acropolis hill with the Parthenon temple is covered with smoke from a wildfire burning the Island of Evia, in Athens, Greece August 13, 2019.REUTERS/Costas Baltas

The Acropolis hill with the Parthenon temple is covered with smoke from a wildfire burning the Island of Evia, in Athens, Greece August 13, 2019.REUTERS/Costas Baltas

A combination picture shows smoke over the Parthenon temple from a wildfire that killed 102 people in 2018, July 23, 2018 and the same view of the temple a year later in Athens, Greece, July 23, 2019. REUTERS/Alkis Konstantinidis SEARCH "WILDFIRE ANNIVERSARY" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY

The Parthenon temple is seen atop the Acropolis hill in Athens, Greece, July 23, 2019. REUTERS/Alkis Konstantinidis SEARCH "WILDFIRE ANNIVERSARY" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

The Parthenon temple is seen without visitors as high temperatures prompted authorities to close the Acropolis archaeological site in Athens, Greece July 4, 2019. REUTERS/Alkis Konstantinidis

A view of the Parthenon temple and the walls of the Acropolis hill are pictured in Athens, Greece, June 24, 2019. Picture taken June 24, 2019. REUTERS/Alkis Konstantinidis

People walk at the premises of the ancient Herodus Atticus theatre as the Parthenon temple is seen in the background atop the archaeological site of the Acropolis hill in Athens, Greece, June 24, 2019. Picture taken June 24, 2019. REUTERS/Alkis Konstantinidis