City (pop., 2000: 11,592), northeastern Florida, U.S. It is the oldest continuously settled U.S. city.
In 1513 Juan Castillo de San Marcos , now a national monument, is a symbol of the era of Spanish control. During the American Revolution the city was a refuge for loyalists , and during the Indian Wars it was the place of imprisonment for {{link=Osceola">Osceola and other Seminoles. It is a winter and summer resort and a port on the Atlantic Intracoastal Waterway . The economy is based on tourism and fishing.