Worsening wildfires, soaring heat waves and rising water levels have prompted Greek officials to take a closer look at protecting priceless archeological sites that draw hundreds of thousands of visitors each year.
The monuments, scattered across the nation, earn Greece millions of dollars in tourism revenue, but many of the sites are in rural areas and officials believe better planning is needed in case large crowds of tourists need to be evacuated in an emergency.
After a three-year study by some of the nation’s leading scientific institutions, the Greek Ministry of Culture and Sports has earmarked 19 monuments that most urgently need protection against natural threats, with several more to be bolstered by 2030.
Photo: AFP
The ministry says it is the first time a nationwide evaluation of this scope has been attempted.
The sites under scrutiny include Olympia, habitually threatened by forest fires, the ancient theater of Delphi, where rock slides are a concern, and the sanctuary of Dion, which is prone to flooding.
Olympia Mayor Aristides Panagiotopoulos said that protecting the birthplace of the Olympics, which houses the ancient stadium, a sprawling sanctuary and two museums, requires “constant vigilance.”
“Our concern remains acute, as the area of Ancient Olympia is extensive, with a large expanse of greenery and dense, often unregulated, spontaneous vegetation,” Panagiotopoulos said in an e-mail. “Despite the significant interventions that have been carried out, it is clear that they are not sufficient on their own to cover all needs.”
Wildfires in Olympia in 2007 decimated the natural environment around the archeological site and left more than 40 dead in the broader region of Elis.
Panagiotis Lattas, the head forester for the region of Elis, said that more recently, major fires had broken out in the area in 2021, 2022 and 2024.
Lattas said that significant rainfall this year generated additional vegetation that must be cleared in both urban and agricultural areas before the wildfire season.
“This year, after a very large amount of rainfall — about 40 percent above the annual average — and with the hot and dry conditions expected during the dry season, vegetation will be particularly abundant,” he said.
Greece has already reduced visiting hours at its most popular archeological site, the Acropolis in Athens, to shield visitors from heat waves during the warmest hours of the day, but the increasing frequency of extreme events calls for something more extensive.
From 2022 to last year, scientists at the National University of Athens and the National Research Foundation examined past and present climate and geological conditions at the 19 sites, looking at prior damage to help determine future vulnerability to extreme events.
Exposure to fire, floods, heat waves and rising sea levels were studied by a team of climatologists, geologists, engineers, conservators, architects and building material experts.
In addition to Olympia, Delphi and Dion, they scrutinized Brauron near Athens, Philippi in the north, Mycenae, Messene, Mystras and the temple of Apollo Epicurius in the Peloponnese, Minoan palaces including Knossos in Crete, the ancient city of Rhodes, and Delos and the Heraion in Samos, which face coastal erosion.
The National Observatory of Athens and the capital’s Demokritos research center also contributed research on weather, wildfires and building resilience to the project, which was budgeted at more than 20 million euros (US$23 million) in EU and national funding.
The plan is to cover a network of 40 sites by 2030, Greek Minister of Culture and Sports Lina Mendoni told a conference in Athens last month.
“Our homeland has a uniquely high density and wide geographical distribution of outdoor monuments, inextricably tied to the landscape, which are exposed to fluctuations in temperature, increased humidity, heavy rainfall and wind,” Mendoni told the conference. “Climate change does not necessarily create entirely new risks from scratch. It usually intensifies existing ones, increasing the frequency and severity of such phenomena.”
New fire sensors at 21 sites are to be delivered this year, and fire protection plans drawn up for more than 60 archeological sites, the ministry said.
According to official statistics, Ancient Olympia in 2024 drew more than 300,000 visitors. Knossos had more than 1 million and Delphi more than 290,000.
Delphi Mayor Panagiotis Tagalis said that rockfalls on the Amfissa-Livadeia road in November 2024 caused “serious problems for access to the archeological site and museum of Delphi, as well as for the residents, employees, businesses, and visitors of the wider area.”
The ministry installed wire mesh to the side of cliffs overlooking the archeological site and the municipality said it had cleared a nearby rural road as a backup emergency route for small vehicles.
“Twenty years ago it was absolutely forbidden to create firebreaks ... in protected areas,” Mendoni said. “Fortunately, the mentality has changed.”
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