Greece · Geography · Hard
Answer: Piraeus — Piraeus has been the port of Athens since the 5th century BCE when Themistocles fortified it; today it is the largest passenger port in Europe, connecting the mainland to the Aegean islands and Crete.
Piraeus has been the port of Athens since the 5th century BCE when Themistocles fortified it; today it is the largest passenger port in Europe, connecting the mainland to the Aegean islands and Crete.