In Greece, ancient tourist sites are closed to visitors due to the heat. Thus, the famous Acropolis and nearby attractions are inaccessible in Athens.
The first heat wave of this summer season has not subsided in the country for several days. Winds from North Africa raised the temperature to 43 degrees Celsius.
Primary schools and kindergartens have been closed throughout Greece.
And for older people in Athens, special rooms with air conditioning have been equipped where they can hide from the heat.
Firefighters are on high alert as strong winds are forecast in some areas. They had already put out several forest fires on Wednesday.
Athens authorities say police and drones are patrolling the city.
Greece is one of the countries in Europe hardest hit by climate change. In recent years, the heat has caused several deadly fires and irregular downpours.
Scientists warn that by 2050 Greece could become an average of 2 degrees hotter.
