Authorities in Greece have imposed mandatory work breaks in areas where temperatures are expected to exceed 104 degrees Fahrenheit

The ancient temple in Athens draws millions of visitors each year. Temperatures were expected to reach up to 38 degrees Celsius in Athens. But the ancient temple rests on a rock overlooking Athens, offering visitors very little shade.

The four-day heatwave confirmed by meteorologists began Sunday is the second to grip Greece since late June. Temperatures are expected to reach 42°C today, with a maximum of 38°C in Athens. Similar temperatures are expected tomorrow.