La Coupole is a massive Second World War bunker complex located in the Pas-de-Calais department of northern France, near the town of Wizernes. Originally codenamed Bauvorhaben 21 or Schotterwerk Nordwest, this fortified underground facility was constructed by Nazi Germany between 1943 and 1944 as part of the Atlantic Wall defenses. The complex features a distinctive concrete dome structure that gives it its name, and was intended to serve as a launch site for V-2 rockets targeting England during the war.
The bunker's strategic location, approximately 5 kilometres from Saint-Omer, made it an ideal site for launching attacks across the English Channel. The construction involved forced labor and extensive concrete fortifications designed to withstand Allied bombing raids. Today, La Coupole has been preserved as a museum and historical site, offering visitors insight into the technological and human aspects of the Second World War's final stages in Western Europe.