In the 1960s, a private courtyard in central London had a water fountain that could slide sideways to reveal the entrance to a vast complex of secret tunnels.

Visitors can walk through the U-505's control room and bunks that held space for its crew of 59 men.

As defeat loomed, Japan turned to Germany for one last weapon—a Tiger tank. What happened to it remains one of WW2’s ...

China's scientists have stated that striking the sides of GBU-57 MOP within a distance of 3,900 feet could shatter the bomb.

Hitler spent over 800 days, more than two years, inside the Wolf’s Lair, his secret military headquarters hidden deep within ...

When two presidential aircraft made mysterious maneuvers, the world began to wonder: what was Vladimir Putin hiding? This eye-opening investigation uncovers the network of hidden bunkers, secret ...

Countries like Germany, France and the Baltic states are reportedly among the most advanced in their preparedness. Companies ...