A towering spire with three decorative fins at its summit, Tranquility Spire protruded from the heart of the Jedi Temple for a millennium. One of the Jedi Order's holiest sites, its interior was lined with galleries depicting the Order's history. Mosaics, tapestries, and sculptures were suspended in the center of the tower, suspended on repulsors and were viewed through transparisteel turbolifts that lined the outer walls of the spire. It was surrounded by four smaller spires collectively referred to as the Council Towers. At the base of the tower, the original mountain peak of the sacred spire jutted out of the ziggurat and was encircled by hallways which overlooked the barren slopes of the edifice. Pathways led from the outer halls onto the mountain and through it, leading down into original cave chapels. It was the site of meditation balconies and a that presented a series of holo-depictions of the history of the Jedi where the younglings were brought for education. The Spire's apex contained halls and a chamber that was important to the Order, including private meditation and contemplation rooms, lecture halls, and a galaxy holomap room. The military command center of the Jedi was also located in this section of the Temple.
Within the finned portion of the Spire was the , which housed the Hall of Knighthood and a private hangar for dignitaries as well as members of the Jedi High Council. The Pinnacle Room of the Spire housed the most important documents and artifacts of the Order; it was also used as a meeting place for the High Council in addition to the Jedi Council Chamber.
After the fall of the Jedi Order and subsequent rise of the Galactic Empire, Darth Sidious took up residence in the Jedi Temple, transforming the Temple Spire into the seat of government of the Empire. Converting the pinnacle chamber to his throne room, it was renamed the Palace spire and the rest of the spire was stripped of all references to the once proud Jedi and in its place was installed statues and art dedicated to the glory of the Empire.
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