Hylian Fields

Hylian Fields is a large, grassy area that composes most of Heaven Tail. It is the central region of Heaven Tail that leads to all of the prominent locations of the kingdom, and as such, Link must travel through Hylian Field to reach villages, markets, and lakes, among other places.

Tartarus
The castle itself is located on a floating island, shaped like, as well as named, Laputa.