Piraeus of social problems also emerged with the concentration of new populations in the suburbs of the old city, such as Nikaia, Keratsini, Drapetsona and Korydallos. The involvement of Greece in World War II came as a major setback to the city's progress. After the war, the city began its development once more, as damage to the port and the city were repaired and new additions took shape after 1955. Piraeus is now the third largest municipality in Greece; the city proper with its suburbs form the Piraeus urban area, which is incorporated in the Athens urban area, thus making Piraeus
Port of Piraeus automobile terminal handled 430,000 automobiles, 100,000 for the local market and 330,000 transhipments. The Port of Piraeus is the largest passenger port in Europe and one of the largest passenger ports in the world. It has a total quay length of 2.8 km and draft of up to 11 m. Vehicle traffic reaches 2.5m while in 2017, passenger traffic reached 15.5m. A plethora of destinations in Greece can be reached by ferry from the harbour, including islands in the Saronic Gulf, the Cyclades, Crete, islands on the Northern Aegean Sea as well as Rhodes, amongst others. A full list can