Swiss Cheese Alps

The Swiss Cheese Alps is a large mountain range located somewhere on the Mushroom Planet, perhaps Pasta Land, because Mayor Fettuccine appears. A small town is also situated at the base of the mountains.

In The Super Mario Bros. Super Show! episode "Koopenstein / Baby Mario Love", Dr. Koopenstein and Mouser set up a lab here, hoping to experiment on the locals. They were defeated by Mario, and peace returned to the land. Mouse set his lab here, possibly because he's a mice and mice love cheese.