Christmas Town
Christmas Town is an expanded part of Halloween Town added in Kingdom Hearts II, located through a door in the Hinterlands. Although it does have a Christmas theme, it remains as a part of Halloween Town, as shown under the location title as the player proceeds through the areas.
In Kingdom Hearts II, the normal and battle music of Christmas Town were the same as Halloween Town. However, in the Final Mix version, Christmas Town gained new pieces: What A Surprise! and Happy Holidays!, respectively. Also in the Final Mix version, Sora, Donald and Goofy lose their Halloween Town garb and gain Christmas-themed forms instead. Sora retains his vampiric form but the garb is replaced by a black Santa suit. Unlike Sora, however, Donald and Goofy completely lose all traces of their Halloween Town forms, becoming a snowman and reindeer, respectively.
The Experiment is fought here during the second visit to Halloween Town.