Nazi Megastructures: Battle Ready

Built to hold back the Allies, Hitler set up colossal defences across Norway's coast and lines that stretched across the entire Italian peninsula.

As US forces spread across the Pacific, Japan threw suicide bombers into action, built the world's biggest battleship and started building deep beneath Okinawa.

The story of propaganda maestro Joseph Goebbels and Holocaust architect Heinrich Himmler: two men who built one of the largest social megastructures ever - Nazi Germany.

Hitler orders the largest battleships ever seen. But how long will they last? He also demands fortified bunkers in a bid to protect his U-boats from the Allies.