Switcheria is a pocket dimension created by Commutateur and is it's lair. It is filled with all sorts of crazy puzzles (mazes, quizes, etc), and if a traveller who ended up there were to make a wrong move in one of these puzzles, they would be sucked into a room, where Commutateur would unleash horror and suffering upon them. Switcheria appeares to be a giant metal box full of mazes and quizes and stuff like that. It is in between the normal Universe and an alternate Universe of mysterious origin.