Schwerer Gustav - Hitler's giant gun - How it worked and why it turned out to be a disaster

The Gustav gun was a gun about 12 meters high, 47 meters long, weighing 1,350 tonnes and was firing 10 tonnes shells through a 30 meters long pipe. 22 people could sit aligned on the barrel of the gun.

Steam Workshop::Schwerer Gustav

These are the 6 largest guns ever used in combat

These are the 6 largest guns ever used in combat

Second World War Weapons That Failed

REVEALED: Hitler's mind-blowing super-gun which could have won the war for Germany, Science, News

Wunderwaffe – The Nazi Superweapons of WW2

The UnMuseum: Schwerer Gustav - World's Biggest Gun

Schwerer Gustav: The World's Biggest Gun Ever Built

Was the Gustav gun successful, and was it destroyed? If it was, how? - Quora

Schwerer Gustav - Wikipedia

Schwerer Gustav: Largest Gun Mankind Has Ever Built