Odense include the Radisson SAS HC Andersen Hotel, the First Hotel Grand with its brasserie bar, the 68-room Old English-style Clarion Collection Hotel Plaza, City Hotel, which is in close proximity to the Hans Christian Andersen museum, and the 140-room Danhostel Odense City. Nonnebakken, a hill in the Odense area, is the site of one of Denmark's six former Viking ring castles, built during the reign of Sweyn Forkbeard, who had forced his father Harold Bluetooth to leave the country and seek refuge by the Jomsvikings in Wollin (modern Poland) in around 975. The fort provided its occupier the command of
Odense boundaries were redefined in 1970. As a result, the population declined slightly in the 1970s and 1980s, falling to 136,646 in 1981. It began climbing again in the late 1980s, and steadily grew to 144,518 in 1996 and 145,554 in 2004. In 2010 Odense had a population of 166,305 people. As of 2017 it had a population of 176,683. Odense Municipality is the administrative unit which covers not only the city of Odense but surrounding suburbs and villages. Odense City Council consists of 29 members, including a mayor. The former mayor of Odense, Anker Boye, is a member of the