Bowser's Castle

Bowser's Keep, also known as Bowser's Castle, is King Bowser's home and is always the final area Mario visits to rescue Princess Peach. It is guarded by Koopatrols, Magikoopas and Hammer Bros.

Shown in Super Mario Bros. 3 and Paper Mario: The Thousand-Year Door, it is found in the Dark Land, whereas in Super Mario World, Bowser's Keep is found in the Valley of Bowser.

In the Mario Kart series, Bowser's Castle is the name of a few of the game courses.

In Super Mario RPG: Legend of the Seven Stars, the castle is stolen by Exor and Smithy at the beginning of the game, and King Bowser joins Mario to get it back.

In Paper Mario, Bowser and Kammy Koopa use this castle to steal Peach's castle, and lift both into the stratosphere after imprisoning the Seven Star Spirits and stealing the Star Rod. But Mario, with the help from party members Goombario, Kooper, Bombette, Parakarry, Lady Bow, Watt, Sushie and Lakilester, manage to take back the Star Rod and save Princess Peach.