A lightning strike injured four people at the Acropolis in Athens, with the archaeological site being shut down midday Wednesday, after two guards and two tourists were injured when thunder fell on the lightning rod near the Erechtheion temple.
The four people were injured at a ticket booth at the site, said an ambulance service official.
All four were hospitalised, with the tourists released soon after and the guards kept for further observation.
No damage was caused on any of the monuments on the ancient site, which remained closed the rest of the day.
The Acropolis itself suffered no damage, the Culture Ministry announced.
Athens has been hit by several violent storms in recent days.