"The Secret of Hephaestus", Ephorate of Antiquities of West Attica European Day of Conservation 2020, Activities of Ephorate of Antiquities of West Attica "On the Wall of Agia Triada (Holy Trinity) 1821: memories, tears, dances". Agia Triada Wall of Megara. Saturday, July 24, 2021 at 8.30 pm (The use of a mask is mandatory) Print 2901