Imperial Hall

From Memory Alpha, the free Star Trek reference

The Imperial Hall is a fortress on the planet Ilari, where the First Autarch rules with his family and advisors. The present Imperial Hall was built after its predecessor, inhabited by Tieran, was burned to the ground in a rebellion. The building is protected by a detection grid.

Tieran, controlling Kes' body, stormed the Imperial Hall in 2373 with his followers and seized power. Tieran was subsequently removed when Demmas, the rightful Autarch, defeated his forces and assaulted the Imperial Hall with assistance from USS Voyager personnel. (VOY: "Warlord")