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Holy Trinity Cathedral
2 Εθνικής Αντιστάσεως, Πειραιάς
Church· 6 min from marina (446m)
The Holy Trinity Cathedral (Hagia Triada) is the largest and most prominent Greek Orthodox church in Piraeus, serving as the metropolitan cathedral seat for the entire community. It sits just a short walk from the port, so you can't miss it — and you shouldn't. The architecture is genuinely impressive, both inside and out, making it worth stepping in even if you're just passing through.