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 Thessaloniki Port of Thessaloniki The Port of Thessaloniki () is one of the largest Greek seaports and one of the largest ports in the Aegean Sea basin, with a total annual traffic capacity of 16 million tonnes (7 million tonnes dry bulk and 9 million tonnes liquid bulk). As a free port, it also functions as a major gateway for the Balkan hinterland and southeastern Europe. The Port of Thessaloniki also contains the second largest container port in Greece, after the Port of Piraeus. In 2007 the Port of Thessaloniki handled 14,373,245 tonnes of cargo and 222,824 TEU's, making it one