MilitaryHistoria - Schwerer Gustav was a German 80-centimetre

Krupp 80 cm Kanone Schwerer Gustav (Dora) Railway Gun

The Biggest Gun Ever Made: The 800mm Schwerer Gustav - Wide Open Spaces

Schwerer Gustav: Largest Gun Mankind Has Ever Built

A History Of War — The Schwerer Gustav was a German 800mm gun used by

Krupp 80 cm Kanone Schwerer Gustav (Dora) Railway Gun

Schwerer Gustav (English: Heavy Gustaf) was the name of a German 80 cm (31.5 in.) railway gun. It was developed in the late 1930s by Krupp in Darłowo (then Rügenwalde) as siege