The Boeing Everett Factory, in Everett, Washington, is an airplane assembly building owned by Boeing. Guinness World Records list the Boeing Everett factory as the largest building in the world by volume at 472 million cubic feed (13.3 million cubic meters).The Everett factory is like a small city, requiring its own fire department, security force, fully equipped medical clinic, electrical substations and water treatment plant. There are about 30,000 people working at the Everett facility, and they work in three shifts around the clock.