Furreby Coastal Battery at Løkken on Denmark's northwest coast was constructed by the German Navy starting in January 1943 to prevent Allied landings and protect shipping routes. The battery became operational on February 6, 1943, with four Danish 12-centimeter coastal guns initially installed in concrete positions. Originally sited on elevated dunes at Furreby, the installation represented a significant defensive position during World War II German occupation. Since 1945, approximately 90 meters of coastline have eroded into the sea, causing most bunkers to slide down the 20-meter slope and now rest visibly on the beach itself. Today the remains form a free-to-visit small park offering an unusual perspective on Cold War-era coastal fortifications shaped by natural erosion and time.