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.

Review: Museum of the Atlantic Wall, Pas de Calais - Mechtraveller

These are the 6 largest guns ever used in combat

Schwerer Gustav: Largest Gun Mankind Has Ever Built

Schwerer Gustav: Biggest Gun Ever Used in Combat

Of guns with, and guns on, rails How to Spot a Psychopath

Dora railroad gun

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Schwerer Gustav - Rail Super Gun (Behemoth)

South African Military History Society - Journal - HEAVY GUSTAV - The Story of a Gun

Hitler Created the Largest Gun Ever

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