One of the world’s largest Nazi bunkers has been transformed into a museum

During World War II, about 200 concrete bunkers for Nazi soldiers were built along the Danish coast.

Denmark's largest was the Tirpitz Bunker, which measured 7,500 square feet and was located in Blåvand. Named after a German battleship, the bunker never saw military action. Nazi soldiers abandoned its construction in 1945.

For decades, it sat empty — a dark reminder of Nazi-occupied Denmark.

But the bunker has recently taken on a new life. Architecture firm Bjarke Ingels Group (BIG) transformed the partially subterranean building into the

Blåvand Bunker Museum, where visitors can learn about the history of WWII and the Danish West Coast.

Take a look inside the museum, which opened in June: