The seven Holiday Worlds of old are separate places that are each linked together, and linked with the normal world. The seven Holiday Worlds represent Independence Day, Halloween, Christmas, Thanksgiving, Easter, St. Patrick's Day and Valentine's Day sealed inside the seven trees. These worlds are accessible through Holiday Doors. The doors in Halloween Town are located in the Hinterlands. When you open the door, the magic will take you in.
The Holiday Worlds from right to left are: