Battle of Coruscant (Sith war)

During an early war against the Sith, they managed to invade the planet Coruscant, capital world of the Old Republic. In order to create a focal point for the dark side, the Sith then constructed a shrine at the peak of a mountain at the heart of the planet. In retaliation, the Jedi Order mobilized its forces and fought the Sith on the contested world. Eventually, the Jedi would emerge victoriously, and they drove the Sith from Coruscant.

Roughly a thousand years later, the Jedi would construct a temple atop the ruins of the Sith shrine in order to contain its dark energy.

Appearances
Tarkin