Kalvøysund festning, Coastal fort in Arendal, Norway
The fortification spans 42 decares on Flostaøya island, featuring four gun positions and numerous military structures connected by a network of trenches.
German forces constructed Kalvøysund festning in 1941 as part of their coastal defense system, installing French-made cannons with ranges reaching 12,000 meters.
The fortress reflects the military architecture of World War II with its regelbau R636 bunker design, common in Norwegian coastal fortifications.
Visitors can explore various preserved bunkers and artillery positions while accessing the public swimming area within the fortress grounds.
The largest tunnel complex contains three halls now used by Flosta Pistol Club, where no wartime shots were fired.
Location: Arendal
GPS coordinates: 58.53933,8.97758
Latest update: March 13, 2025 16:58
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