Syreneset Fort in the south of Karmøy dates from World War II when it was used by the German occupying forces to monitor ship movements and shipping lanes. The fort was operational from March 1943 and equipped with five 12.2 cm guns with a range of 21 km. Below the fort was a command post for two gun turrets that guarded the approaches to Skudeneshavn. Crew quarters type R 655 are only found at Syre, and nowhere else in Norway. The fort is well concealed in the terrain.
Today visitors can enter the command bunker, and from the 13 cm lookout slit you can see all the way from Haugesund to Stavanger.