Fortress - design, technology and history of key fortresses, strategic positions and defensive systems

Look inside

Look inside

Click on images to see enlarged view.

Defenses of Pearl Harbor and Oahu 1907–50 (Fortress 8)

Troy c.1700–1250 BC (Fortress 17)

U-Boat Bases and Bunkers 1941–45 (Fortress 3)

Japanese Castles 1540–1640 (Fortress 5)