The term "the Quad" can refer to the rectangular green field bounded by Cabot and Pforzheimer Houses, or it can refer to the entire section of campus bounded by Garden, Linnaean, Walker, and Shepard Streets, plus the Jordans, which are east of Walker Street.
Other adjacent portions of campus, such as the Botanic Gardens, Kittredge, the Quadrangle Recreational Athletic Center (Q-RAC), and the Observatory, are often also grouped as part of the Quad.
The Quad Houses—Cabot, Currier, and Pforzheimer—are three of the 12 residential houses in which most Harvard undergraduates reside after their first year.
The Quad is separated from and about half a mile northwest of the main part of campus surrounding Harvard Yard, where almost all undergraduate classrooms and department offices are located.
The Quad became fully coresidential in 1972, when Radcliffe College and Harvard University agreed to let their respective students live on the other institution's campus.