Henry B. Clarke House
Clarke House may have been modeled on the home of William B. Ogden. The Clarke house is often described as the oldest surviving house in Chicago, although part of the Noble-Seymour-Crippen House in the Norwood Park neighborhood was built in 1833. (However, Norwood Park was not annexed to Chicago until 1893.) The Clarke House was designated a Chicago Landmark on October 14, 1970. It was added to the National Register of Historic Places on May 6, 1971.
Old North Building
The Old North Building, or simply Old North, is the oldest extant academic building on the campus of Georgetown University in Washington, D.C. and was the second major building built on the campus. To the east, the building is joined to Healy Hall and to the west, it is joined to New North, while the southern façade of the building encloses Dahlgren Quadrangle. Built in the Georgian style, Old North was one of the grandest buildings in Washington at the time of its completion in 1795. It served as the flagship of the university until the construction of Healy Hall. Old North currently houses the McCourt School of Public Policy.