• Aerial view of the Viking ring fortress of Trelleborg, near Slagelse in Denmark. This was the first discovered Viking ring fortress, and the geometry is clearly visible.
  • Time will tell — and the list of Viking-Age Ring Fortresses on the World Heritage List may well need to be expanded.
  • Viking Ring Fortresses (click on the map to enlarge). During the late 10th century, a number of circular fortifications were built across Denmark and Sweden.
  • The Viking Age Ring Fortresses are a series of five similar fortresses built by the Vikings within a very limited timeframe and with a remarkable symmetry.
  • Aggersborg Aggersborg is the largest of Denmark's former Viking ring fortress, and one of the largest archaeological sites in Denmark.
  • Harald Bluetooth’s Trelleborg is the best-preserved Viking ring fortress in Denmark and worth a stopover when driving from Copenhagen to Odense and Fyn.
  • The Viking ring fortress of Trelleborg is located on the island of Sjælland (Zealand) in Denmark. Situated in the proximity of the small town of Slagelse...
  • The castle in Borgeby, just a few kilometres north of Malmö is believed to be placed in the centre of one of two viking ring fortresses in Scania.
  • The historic mounds of the Viking Age ring fortress Trelleborg near Slagelse are set to become neighbour to an archeologically correct reconstruction of the...
  • Add Trelleborg Viking Ring Fortress to a New List. View all photos. Trelleborg Museum and Viking longhouse Blue Square House - Flickr.
  • Borgring Viking-Age Ring Fortress: aerial view looking westwards over the E47 dual-highway (2023) by Viking-Age Ring FortressesUNESCO World Heritage.
  • Fortress Map Trelleborg is the word for a Vikings Ring Fortress or a Viking Castle. 10th century Danish ring castles are one of the clearest evidence of a...