Authorities in Athens announced on Wednesday the closure of the Acropolis for five hours due to heat wave temperatures that also prompted many schools to close.
The ancient site in the Greek capital — which drew nearly 4 million visitors last year — was closed from midday till 5 p.m. as the temperature was set to reach 39 degrees Celsius (102 degrees Fahrenheit), The Associated Press reported.
Elementary schools and preschool classes were also canceled in parts of southern and central Greece where the temperatures were highest.
City authorities announced that garbage collection would also be halted for several hours Wednesday and that seven air-conditioned spaces would be opened to the public. Drones with thermal cameras were being used in Athens to coordinate the public health response, officials said.
Cooler weather is expected late Friday.

Greece is one of the most climate-impacted countries in Europe. Last year, rising temperatures fuelled deadly wildfires and erratic rains caused some of the worst flooding on record, both of which damaged crops and livelihoods.
Last winter was the hottest on record and rainfall was low, creating the conditions for more fires, scientists say.
Similar conditions were seen last year across much of southern Europe, including Portugal, France, Spain and Italy where fires caused dozens of deaths.
In Greece, fires began earlier than expected this year, including one in March.