The Ganglion Weapons Hangar is an area in Xenoblade Chronicles X. It is located in Cauldros, within the larger O'rrh Sim Castle Ruins. It is an enormous megastructure approximately 800 meters wide, including the immediate outer wall. (By comparison, New Los Angeles is about 1900 meters wide, including its outer wall.) The roof of the hangar is dominated by an approximately 650-meter-wide metal iris that can open and close to accommodate large craft; when closed, the roof resembles a giant metal colosseum.