Coruscant

Coruscant, originally called Notron, also known as Imperial Center or the Queen of the Core, was a planet located in the galactic Core. It was generally agreed that Coruscant was, during most of Galactic history, the most politically important world in the galaxy. At various times, it was the capital of the Galactic Republic, and the Galactic Empire. In controlling Coruscant, these governments controlled most of the galaxy in the process.