In the middle of an extremely unforgiving and desolate high desert is the most secret military facility in the world.

Below a historic English market town lies a secret underground city complete with kitchens, laundries, storerooms, and an underground lake.

There are hundreds of secret WWII bases hidden in British forests. Built to fight a Nazi invasion, they remained unknown for decades.

The historic site where Queen Elizabeth I once gave a searing speech.