Schwerer Gustav - Hitler's giant gun - How it worked and why it

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.

Railway gun - Wikipedia

Heavy Gustav - The Largest Weapon Ever Built

The Heavy Gustav, Hitler and generals inspecting the largest caliber rifled weapon ever used in combat, 1941 - Rare Historical Photos

World's BIGGEST / MOST POWERFUL GUN ever built! (Heavy Gustav Railway Gun.)

Nazi Super-Weapons of World War II - Owlcation

Schwerer Gustav, the biggest gun to exist with its shell : r/interestingasfuck

Gustav - the Super Heavy Gun, Remembering WWII

Dora railroad gun

Schwerer Gustav: Hitlers Enormous Gun

Second World War Weapons That Failed

The 6 Most Gigantic Everything in the History of War

Kuvira's spirit weapon was based on the biggest and most powerful gun ever exist!It was made by the Nazis in 1941 and its named Schwerer Gustav Gun! : r/legendofkorra

Would a giant Cannon, like the Schwerer Gustav be useful in the modern day? - Quora