Star World

The Star Road is a mystical road far above the Mushroom World, but which is linked to various locations around the world. It consists of seven stars, which each serve as a warp point. There is also a race of etherial beings that lives in the Star Road; Geno was a member of this group.

In Super Mario World, Mario accessed the Star Road and used it for shortcuts. In Super Mario RPG: Legend of the Seven Stars, he discovered that Star Road had been destroyed and and had to collect its constituent stars to rebuild it.