The Imperial Senate Building, previously called the Galactic Senate Building, and alternatively referred to as the Senate Building, Senate Rotunda, or Senate Dome, was a massive structure situated on the planet Coruscant. This building functioned as the central location for the Galactic Republic Senate and, subsequently, the Imperial Senate under the Galactic Empire.
The Galactic Senate Building, with its readily identifiable domed architecture, was situated in Coruscant's central area and was enclosed by the Senate District. This district also included the Senate Office Building, which housed the offices of the Supreme Chancellor. The blue robed Senate Guards provided security for both the building and the Senate District. These guards, who were stationed at delegate platform entrances and the building's entryways, harmonized with the Senate Building's formal setting. Monumental statues honoring the Republic's original founders stood outside.
The building's core was the expansive, circular Galactic Senate Chamber. It featured circular platforms with seating for hundreds of senators and delegates, who convened there to debate laws and discuss proposed legislation. A platform could detach from the wall when a member wanted to address the assembly, ensuring they were visible and audible to everyone present. The Supreme Chancellor presided over Senate proceedings from a central podium. The Senate Building also incorporated numerous smaller conference rooms, senatorial offices, including the chancellor's working office, and other administrative areas. A docking bay was constructed on one side of the building to facilitate easy access for diplomats.