The Secret Military Fortresses Hidden in the Swiss Alps

These clandestine bunkers helped keep Switzerland out of WWII. Now they house everything from museums to raclette cheese.

National Redoubt (Switzerland) - Wikipedia

Switzerland Bunker Fortress. Switzerland, with its abundance of…, by Veronica Alexander

Inside the Haunting Remains of Secret WWII Bunkers

Traversing the Confoederatio Helvetica by rail

Swiss army bunkers house everything from cheese to guns

16 haunting pictures of Switzerland's secret bunkers

The Secret Military Fortresses Hidden in the Swiss Alps

Reimagined Swiss Army Bunkers

16 haunting pictures of Switzerland's secret bunkers

The New Lives of Decommissioned Swiss Army Bunkers - The Atlantic

Switzerland's Historic Bunkers Get a New Lease on Life, Travel