Revival faculty residences in 1840, as well as Mason Hall (1841–1950) and South College (1849–1950), which functioned as both academic spaces and dormitories. Only one of the original faculty residences remains today; it has been renovated in the Italianate style to serve as the President's House, making it the oldest building on campus. The Chemical Laboratory, built by Albert Jordan in 1856 and operational until 1980, was notable for housing the nation's first instructional chemistry lab. After the completion of the Old Medical Building (1850–1914) and the Law Building (1863–1950), an open space known as The Diag began to take shape. Among the notable structures on the original Central Campus were University Hall (1872–1950), designed by alumnus E. S. Jennison, and the Old Library (1881–1918), designed by Henry Van Brunt, who was also the architect behind Memorial Hall (1870) in Cambridge, Massachusetts.
The Central Campus today, however, bears little resemblance to its 19th-century appearance, as most of …
