A structure identified only as 'OB' is located at the provided coordinates (49.2724°N, 0.2700°W) near the commune of Bény-sur-Mer in the Calvados department of Normandy, France. The area is historically significant for its World War II Atlantic Wall coastal defenses and D-Day landing beaches. The provided web search results discuss contemporary French nuclear deterrence policy (Force de dissuasion) and contain no specific information linking this precise location to any confirmed military installation, bunker, or historical function.
Without corroborating historical records, archaeological surveys, or local documentation, the nature and purpose of this site cannot be verified from the available information.