Where the Aura flows into the sea stands Turku Castle, one of the city's most important historical monuments. The oldest part of the fortress was built at the end of the 13th century, and the newer part dates from the 16th century. The castle was damaged by bombing in 1941, and its restoration was completed in 1961. Many of its seemingly infinite rooms hold rather incongruous exhibits: next to a display on medieval life (featuring a dead rat to illustrate the Black Death)
is a roomful of 1920s flapper costumes. The vaulted chambers themselves give you a sense of the domestic lives of the Swedish royals. A good gift shop and a pleasant café are on the castle grounds.