Flipside Tower is a tower located in Flipside in Super Paper Mario. It's built in shape like a T and is the biggest structure in Flipside. This is the first location where Mario is brought to by Tippi when he wakes up from being unconscious after Count Bleck's invasion in Bowser's Castle. Here, he meets Merlon and is given information on what he must attend to do on saving the world from chaos. On the top of the tower, there are doors to other universes. To open a door to a new universe you must first put a Pure Heart in a Heart Pillar. There are a total of 7 doors on Flipside Tower. Whereas on Flopside Tower there is only one big dark door leading to Castle Bleck.