Hangar 3 - Treasure Island San Francisco, CA The Bay Area's most eagerly anticipated Halloween celebration is back for the fifth year and it promises to better than ever! Featuring an 80K square foot Navy hangar packed with multiple sound areas with more than 30 of the Bay Area's finest DJs. Ghost Ship is created and enjoyed by a growing volunteer art community of SF. It promises mind-boggling and unique interactive art, the Space Cowboys' Unimog and other art cars and several themed rooms. Every year there is a unique array of large-scale artwork created for this one special night.