Welcome to Coruscant, new citizens of the Galactic Empire!
At the conclusion of the Clone Wars, Chancellor Palpatine ordered the destruction of the Jedi Order by issuing Order 66 to all clone troopers throughout the galaxy from his executive office. In the Grand Convocation Chamber of the Senate Building, Palpatine announced to the members of the Galactic Senate the creation of his New Order. With the Jedi all but destroyed, Palpatine proclaimed his intentions to reorganize the Republic into the first Galactic Empire, and thus declared himself Emperor of the galaxy. As with the Republic, Coruscant continued to function as the galactic capital, but was renamed “Imperial Center,” while Galactic City was re-dubbed “Imperial City.”
While the planet’s name was officially changed during Palpatine’s rule, most working-class denizens of the Galactic Empire continued to call the planet-city by its old name. As part of the Humanocentric policies of the Empire, non-Human species were also compelled to live in segregated areas of Imperial City, the largest and best-known of which was known as Invisec. Those that did enter other parts, whether by intention or mistake, were punished brutally.
The Imperial Palace.
Emperor Palpatine also began to shape Coruscant with his own designs, and this included the installation of almost one million surveillance systems throughout the ecumenopolis. Massive shield generators were placed all over Coruscant, and where the shield segments overlapped, powerful storms would brew. Although Coruscant had always been known for its high concentration of thunderstorms due to rising vapor from the billions of buildings and homes, the increased frequency lent the planet a foreboding, almost Gothic look. Palpatine also arranged for the Executor-class Star Dreadnought Lusankya to be buried beneath the Manarai Mountains district. Later, the massive battleship was used as a private prison by Director of Imperial Intelligence Ysanne Isard.
Palpatine also had the Palace of the Republic rebuilt and renamed the Imperial Palace. The Palace, a massive pyramidal structure which was by far the largest structure on Coruscant, was rumored to also be the largest building in the entire galaxy, with the possible exceptions of the massive Sharu plastic pyramids of the Rafa system.