The Heorem Complex, or SIS Headquarters during the Old Republic, was a kilometer-wide collection of buildings in the Senate District on Coruscant. It bordered Quadrant H-46 and contained the Heorem Skytunnel, which connected the two sectors.
During the Cold War, the Complex served as the headquarters of the Republic Strategic Information Service, separate from the SIS operations center, and contained the offices of the Director of SIS.