Hall of Unified Defiance[1]

The bowl shaped structure on Planet Harmony used for more than 20,000 years as a meeting place of the First Galactic CouncilThe Hall is formed like a bowl and offers seats for about 40,000 beings. Seats were not assigned but simply taken by whatever number delegates a civilizations wanted to send. The Hall was not really used after the Union was formed at its floor on 2220. The  Hall was blown up by Nogoll in 5021[2]

  1. It was named Hall of Defiance as the Galactic Council was formed to form a united front to defend the Galaxy against the Y'All
  2. In revenge of being sold out by the Kermac, killing several hundred Kermac and a 1000 other beings.