Her Majesty’s Naval Base Devonport
Her Majesty’s Naval Base Devonport is home to more than a dozen submarines. Essentially, it’s a time-capsule of decommissioned submarines. Some of these subs were in their heyday during the Cold War when they were part of the U.K.’s Continuous at Sea Deterrent. In the 1990s, one submarine, the HMS, became one of the first to carry the Trident Missile System. You can actually visit the maritime museum at Her Majesty’s Naval Base Devonport, but careful – some of the submarines still have their radioactive cargo intact.
Flak Towers, Austria and Germany
The Flak Towers were composed of eight complexes of large, above-ground, anti-aircraft towers that were constructed by Nazi Germany in the cities of Berlin, Hamburg, and Vienna (Germany and Austria) in 1940. These towers were used by the Germans during WWII to defend against air raids.