Petal Isles

Petal Isles is a world in Super Mario Bros. Wonder. It is a small archipelago in the center of the Flower Kingdom comprising of many islands of different colors and climates. On the map of the kingdom, it is shown to be the location that Bowser hovers over during at least one point of the game. It is not labelled as a world in-game, nor is it assigned a number. Because of this, and its location geographically, it is unknown when players access this location during the game, however, all surrounding worlds connect up with it.