A German-constructed bunker located near Perelle Bay on the island of Guernsey, one of the Channel Islands. The structure, designated as Unterstand Wa Ko Fest, was built during the German occupation in World War II as part of the Atlantic Wall fortification system. It served as a personnel shelter and command post, with its interior later adorned with murals depicting the island's history, including French, British, and German periods.
The bunker was originally fully buried and has since been partially restored, with its personnel quarters preserved in detail. Guided visits are available, highlighting the site's unique bunker art and historical context. The murals inside, visible from left to right, illustrate Guernsey's transition from 19th-century French influence to British control and finally German occupation in 1943. No armament or crew numbers are confirmed in available sources, but its function as a shelter and cultural artifact is well documented.