The William Gates Building, or WGB for short, is a square building that houses the Computer Laboratory at the University of Cambridge, on the University's West Cambridge site in JJ Thomson Avenue south of the Madingley Road in Cambridge, England.[1][2][3] Construction on the building began in 1999 and was completed in 2001 at a cost of £20 million. It was named after the father of Microsoft founder Bill Gates, William Gates (the second). The Bill & Melinda Gates Foundation provided 50% of the money for the building's construction.