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 Redwood City International Airport and Palo Alto Airport; in contrast, wind speeds at the Port were found to be approximately half the levels of San Francisco Airport. This result is not surprising since Conomos observed that the wind speeds in Northern San Mateo County are high due to the San Bruno Gap in the Santa Cruz Mountains. The Port of Redwood City has more than one lineal mile of public access along Redwood Creek, including walkways, viewing areas and picnic areas. The Port provides a venue for a number of public events and festivals, including visits by historic ships and sailing vessels.