Piraeus in the lavish northern suburbs of Athens, many shipowners have opted once again to move their bases away from Piraeus to Northern Athens. Piraeus, nevertheless, is still a major centre for Greek and international shipping, and bi-annually acts as the focus for a major shipping convention, known as Posidonia, which attracts maritime industry professionals from all over the world. Piraeus today is one of the largest ports in Europe, and the annual number of 19 million passengers makes it the third largest worldwide in terms of passenger transportation. Piraeus is currently Greece's third-busiest port in terms of tons of goods
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.