Bowser's Castle (Earth-2789)

"Gee, it's only the best castle ever made! Take a look from a distance! Powerful and awe-inspiring design choices slap your face! It's like looking at me!"

- Bowser

Bowser's Castle is the seat of Koopa king Bowser, as well as the base of operations for his army and the Koopalings. It is located at the top of a volcano in the Koopa Kingdom.