Republic Executive Building

The Republic Executive Building, also called the Senate Office Building, Executive Annex Dome, and Senate Annex, was a large domed building in the Senate District of Galactic City on Coruscant.

Description
The building was located at the rear of the Senate Building. The annex dome was designed to complement the Senate Building, due to their similar appearances. The building was built to alleviate the cramped office conditions in the Senate Building. The Chancellor's Suite was located towards the top of the building, from which the Supreme Chancellor conducted meetings with the Loyalist Committee, Senators and members of the Jedi High Council.

Many senators held an office here, including Senators Padmé Amidala and Bail Organa. Organa held a meeting with a few loyalist Senators, which would eventually become the Alliance to Restore the Republic here during the last days of the Galactic Republic. Following the memory wipe of C-3PO, Organa stored the droid's memory on a data disk in his office, to retrieve it if necessary.

The Executive Building featured an expansive, multi-level landing dock near the top of the dome. Executive shuttles, speeders and gunships docked here for meetings with the occupants of the Senate offices. Attendant droids, load-lifters and pilot automatons were on hand to assist Republic officials. Larger vessels, such as diplomatic cruisers, star skiffs and light stock freighters, could dock in some of the larger landing bays. From the dock, visitors walked through a huge, column-lined hall to reach the executive offices. It had an atrium at its top.

The Clone Wars
During the Clone Wars, the building was attacked by the infamous bounty hunter Cad Bane and his gang. Bounty hunters infiltrated the building and kept several senators as hostages, demanding the release of Ziro the Hutt. After the Hutt was freed, Bane escaped leaving behind laser-triggered bombs that destroyed part of the east wing.

Later on in the war, the Republic brought a dangerous Zillo Beast from Malastare to be tested on in the Republic Science and Technical Center, but it soon escaped and went on a rampage through the city, damaging dozens of structures and killing hundreds, until it reached the Executive Building. The creature climbed it and caught the Chancellor trying to escape in his Executive ship. Several Jedi subdued the creature from killing him, and the Zillo Beast was soon attacked with gas bombs before falling off the building to its death.

Chancellor Palpatine was one of the most high profile residents of the building. It was in his office, overlooking Galactic City, where he resisted an arrest attempt by Jedi Masters Mace Windu, Agen Kolar, Kit Fisto, and Saesee Tiin, before issuing Order 66 and beginning the Great Jedi Purge.

The Galactic Civil War
After the formation of the Galactic Empire, Emperor Palpatine relocated his place of residence to the Palace of the Republic, which he renamed the Imperial Palace. Secret chambers within the Executive Building were used to hold captured Jedi during the Purge. In the bowels of the building, Darth Vader tortured Dama Montalvo in his attempt to track down Obi-Wan Kenobi.

The Galactic Federation of Free Alliances
With the formation of the Galactic Alliance, the Chief of State's Suite was established in the building, along with the many other offices that existed previously.