Karlsvärd Fortress, Fortification in Slite, Sweden.
The pentagonal fortress stands on Enholmen island near Slite harbor, featuring stone bastions and defensive walls overlooking the Baltic Sea.
Construction began in 1711 under Charles XII's reign, but by 1788 the fortress was considered ineffective and marked for demolition.
The fortress represents Swedish military architecture from the 18th century, incorporating design elements from continental European fortification practices.
Visitors reach the fortress by boat from Slite harbor, with guided tours available during summer months through the National Property Board of Sweden.
Underground tunnels beneath the fortress served as a secret naval mine control station from the 1950s through the 1990s.
Location: Gotland Municipality
Inception: 1858
GPS coordinates: 57.69528,18.82132
Latest update: March 2, 2025 23:11
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