There is a glitch in this game that allows you to warp anywhere. During gameplay, open the map interface. Then simply press the A Button while the cursor hovers over a spot on the map - that will bring you to that spot on the map. Note that if the spot is not (properly) coded in (as in, beyond the bounds of the real map or in a place you simply are not supposed to go to), then the game will glitch up graphically, but you'll be able to get out of it in the same way most of the time.