The Hanseatic town of Visby was registered on UNESCO’s list of World Heritage Sites in 1995. The town wall that encircles the city centre and the many church ruins that have been preserved have become hallmarks of Visby’s urban landscape. The city wall of Visby, which extends for 3.5 km, has more than 50 towers and is surrounded by moats. It originally was built for protection from foreign enemies but also guarded against assailants from the countryside.

Built in two stages during the 13th and 14th century, with one tower from the 12th century, it is the oldest surviving non-religious building in the Nordic countries. During the 18th century, several fortifications were added and some of the towers rebuilt to accommodate cannons. Visby city wall is an important part of Visby World Heritage Site.