Stations on Line 3 of the Athens metro will be closed on selected dates during the summer months in order to test an extension of the line to Piraeus, the metro operator STA.SY announced on Monday. On these dates, the metro stations Nikaia, Korydallos and Agia Varvara will stay closed and Line 3 will only … The post Line 3 metro stations to close on selected dates July-Aug to test Piraeus extension appeared first on Keep Talking Greece.