Lincoln's Inn Fields is the largest public square in London. Lincoln's Inn is separated from Lincoln's Inn Fields by a perimeter wall and a large gatehouse. When originally laid out, Lincoln's Inn Fields was part of fashionable London. The oldest building from this period is Lindsey House, 59-60 Lincoln's Inn Fields, which was built in 1640 and has been attributed to Inigo Jones. It derives its name from a period of ownership in the 18th century by the Earls of Lindsey.