Schedule of archaeological sites, museums hours as of May 21st
In a statement, the ministry said that all museums and sites will follow the official summer schedule on that day as listed on their site (see link below), with the following exceptions:
In Athens: Acropolis & slopes, the Ancient Agora, Areopagus Hill, Stoa of Attalus Museum, the Roman Agora, and Hadrian's Library will be open 08:00-17:00. The Kerameikos Cemetery and Museum, the Temple of Olympian Zeus, and the Lycaeum of Aristotle will be open 08:00-15:00.
In Achaia (W. Peloponnese), the Archaeological Museum of Patras will be open 08:00-15:30.
In Viotia (Boeotia), the Archaeological Museum of Thebes will be open 08:00-14:00.
In Preveza (NW Greece), the Archaeological site and Museum of Nicopolis will be open 08:00-15:00.
In Chalkidiki peninsula (N. Greece), the Basilica of Sophronius will be open 09:30-15:30, while the Tower of Galatista and the Tower of Ouranopolis (Prosphorion) will be open 08:30-14:00.
Please note that the following sites will be shut down on May 21: The archaeological site of the Megalopolis Theater and the archaeological site of Mantineia (both in Arcadia, Central Peloponnese), and the Castle of Methoni (SW Peloponnese).
(The English-language site of the ministry with all open hours in Greek sites and museums can be accessed through a download from https://www.culture.gov.gr/en/service/SitePages/view.aspx?iiD=2710.)