The Everett site was originally built in the late 1960s to produce the 747. It expanded with the addition of the 767 assembly line in 1980 and the 777 line in 1993. The Boeing Everett site also is home to the 787 Dreamliner. Now, the Everett facility is Boeing's largest site, spanning more than 1,000 acres and employing more than 25,000 people. The Everett factory building was recognized by Guinness World Records as the largest building in the world in 1967.