The Old Campus is the oldest part of the Yale University campus. It is a 4-acre (1.6 ha) courtyard with a main entrance from the New Haven Green known as Phelps Gate. Fourteen buildings surround it, including eight dormitories and two chapels.
Yale's first building here, the College House, went up in 1718. Connecticut Hall followed in 1750 and is Yale's only surviving building from the colonial era. A plan in 1792 called Old Brick Row was the first campus plan in the United States and became a template for many other American colleges.
After 1870, the Old Brick Row plan gave way to the current quadrangle. Architect Charles C. Haight finished Phelps Gate in 1895 and Phelps Hall in 1896.