Port of Piraeus permanent navy base for the mighty Athenian fleet. However, in the late 4th century BC began a long period of decline for Piraeus; the harbours were only occasionally used for the Byzantine fleet and the city was mostly deserted throughout the Ottoman occupation of Greece. In 2002 PPA and the Greek government signed a concession agreement. The Greek government leased the port zone lands, buildings and facilities of Piraeus Port to PPA for 40 years. In 2008 the duration of the concession agreement was modified from 40 to 50 years. With this modification the lease is ending in 2052. Since
Piraeus Ship and the Museum of Electric Railways, hosted in the Piraeus station. The Municipal Art Gallery and the Municipal Library, one of the largest in Greece, are also prominent within the culture of Piraeus. Traditionally, Piraeus has played a major role in Greek sport. The city boasts the most popular and one of the most prestigious Greek multisport clubs, Olympiacos CFP. The other major club is Ethnikos Piraeus, with a long athletic tradition, while other historic clubs are Atromitos Piraeus F.C. and Peiraikos Syndesmos. Others historic clubs from another city of Piraeus are Proodeftiki F.C. of Nikaia and Ionikos of