Trakai (about 7 000 inhabitants) is a historic city and lake resort in Lithuania. There are 200 lakes in the region, of which the deepest (46.7 m) is Galvė with its 21 islands. Island Castle is the only one castle in Eastern Europe that built in an island. The ruins of the Peninsula Castle are at the north end of town. A notable feature of Trakai is that the town was built and preserved by people of different nationalities. Historically, communities of Karaims, Tatars, Lithuanians, Russians, Jews and Poles lived here.