The Battle of Visby took place on July 27, 1361, on the island of Gotland, part of present-day Sweden. It was a significant conflict between the forces of the Danish King Valdemar IV and the defenders of the town of Visby, who were primarily composed of local militia and mercenaries. The battle was part of a larger struggle for control over the Baltic Sea region. The battle is notable for its high casualties, with estimates suggesting that around 1,800 defenders were killed. The Danish forces emerged victorious, leading to the eventual annexation of Gotland by Denmark. The event is remembered for its impact on the political landscape of the Baltic region during the late Middle Ages.