Goldsmiths' Hall is a Grade I building at the junction of Foster Lane and Gresham Street in the City of London. It has served as an assay office and the headquarters of London's goldsmith guild, the Worshipful Company of Goldsmiths, one of the livery companies of the City of London. The Company has been based at this location since 1339, the present building being their third hall on the site. Little is known about the first hall.