Capital Key, found in the Middle Chain, was one of the isles that comprised the Gem Cities of Kwenn on the planet Kwenn. On Capital Key was Sanctuary Mount, a mountain that housed a Jedi Order outpost. Furthermore, the island held a government terrace, a media hub, and a spaceport. Capital Key was connected to Vorah, Gala, Kinnawah, and the Rayley Keys by a series of bridges.