Odense Odense River to the south and Naesbyhoved Lake (now dry) to the north. Nonnebakken, one of Denmark's former Viking ring fortresses, lay to the south of the river. Today, Odense's Møntergården Museum has many artefacts related to the early Viking history in the Odense area. The Vikings built numerous fortifications along the river banks to defend it against invaders coming in from the coast. The city celebrated its thousandth anniversary in 1988, commemorating the first mention of the town's name in a letter dated 18 March 988 from the German Emperor Otto III which granted rights to Odense and neighbouring
Odense has a capacity of 1,200. The club also has a notable volleyball team. RC Odense represents the city at rugby in combination with Lindø RSC. The Odense Bulldogs are a professional ice hockey team based in Odense. They play in the top Danish League Metal Ligaen, as the only team from Funen. In tennis, Tennis Club Odense is located near the Odense River. The country's largest tennis centre is due to open in Marienlyst in 2014. The H.C. Andersen Marathon is held annually in Odense. On Ascension Sunday, children can participate in Eventyrløbet (the Fairy Tale Run) with circuits from