Finished LoK for the first time the other day and noticed that Kuvira's train super-weapon was based on Schwerer Gustav - a real-life railway gun from WWII. : r/legendofkorra

Krupp 80 cm Kanone Schwerer Gustav (Dora) Railway Gun

If you could change Kuvira's final weapon, what would you choose

Sorry if I'm late on this, but Kuvira's spirit cannon was clearly inspired

Where is Schwerer Gustav (an 800 mm German railway gun) now? - Quora

German and captured railway guns in World War II

What happened to the huge railway gun that Germany used in the

German and captured railway guns in World War II

Where is Schwerer Gustav (an 800 mm German railway gun) now? - Quora

Krupp 80 cm Kanone Schwerer Gustav (Dora) Railway Gun

Why can't Dora and Gustav railway guns be found? Even wrecks can

ATLA had a giant ass drill, but airships in TLOK were 'too quickly

Dora/Schwerer Gustav K. (E) Rail Gun, World War II Wiki