Wish there was a bit more on display but what an amazing find. That's like a childhood fantasy of mine to all of a sudden find a hidden city behind a wall., whoever found it was mindblown for a long while.

It's looking for the hidden city of Zion!

Tags for this video have been changed from 'hidden city, bunker, berlin, bomb shelter, tunnels, anthony beevor' to 'hidden city, bunker, berlin, bomb shelter, tunnels, antony beevor' - edited by calvados

^ thanks for the tip, spoco

Full documentary here: http://www.videosift.com/video/Hitler-s-Hidden-City-NatGeo-Documentary