The Spire, also known as Zakuul City, was the capital city of the planet Zakuul. A shining golden metropolis that sprawled outwards from the central tower, the Spire was a vertical city, with skyscrapers and pyramid-shaped buildings suspended above each other in a climb nearly to the atmosphere. All roads on Zakuul eventually led to the Spire, which was built atop the Old World—Emperor Valkorion's first attempt at building a city, which had not been grand enough for him. The very peak of the Spire reached out past the planet's atmosphere and contained the Emperor's throne room, where the Eternal Throne was located.
- Star Wars: The Old Republic: Knights of the Fallen Empire (First appearance)
- Star Wars: The Old Republic: Knights of the Eternal Throne