Sottevast - Credit: Wikimedia Commons
Sottevast was a Second World War bunker complex for launching V2-weapons in Sottevast near Cherbourg, in Normandy, France. It was built, under the codename Reservelager West (Reserve Store West), by the forces of Nazi Germany between 1943 and 1944 to serve as a launch base for V-2 rockets directed against southern England. Read more on Wikipedia
Source: en.wikipedia.org