organized in a number of quadrangles. The Academic Quad, anchored by a statue of founder William Marsh Rice, includes Ralph Adams Cram's masterpiece, the asymmetrical Lovett Hall, the original administrative building; Fondren Library; Herzstein Hall, the original physics building and home to the largest amphitheater on campus; Sewall Hall for the social sciences and arts; Rayzor Hall for the languages; and Anderson Hall of the Architecture department. The Humanities Building, winner of several architectural awards, is immediately adjacent to the main quad. Further west lies a quad surrounded by McNair Hall of the Jones Business School, the Baker Institute, and Alice Pratt Brown Hall of the Shepherd School of Music. These two quads are surrounded by the university's main access road, a one-way loop referred to as the "inner loop". In the Engineering Quad, a trinity of sculptures by Michael Heizer, collectively entitled 45 Degrees, 90 Degrees, 180 Degrees, are flanked by Abercrombie Laboratory, the Cox Building, and the Mechanical Laboratory, housing the Electrical, Mechanical, and Earth Science/Civil Engineering departments, respectively. Duncan Hall is the latest addition to this quad, providing new offices for the Computer Science, Computational and Applied Math, Electrical and Computer Engineering, and Statistics departments. Roughly three-quarters of Rice's undergraduate population lives on campus. Housing is divided among eleven residential colleges, which form an integral part of student life at the university (see Residential colleges of Rice University). The colleges are named for university historical figures and benefactor. Rice does not have or endorse a Greek system, with the residential college system taking its place. Five colleges, McMurtry, Duncan, Martel, Jones, and Brown are located on the north side of campus, across from the "South Colleges", Baker, Will Rice, Lovett, Hanszen, Sid Richardson, and Wiess, on the other side of the Academic Quadrangle. Of the eleven colleges, Baker is the oldest, originally built in 1912, and the twin Duncan and McMurtry colleges are the newest, and opened for the first time for the 2009–10 school year. Will Rice, Baker, and Lovett colleges are undergoing renovation to expand their dining facilities as well as the number of rooms available for students. The on-campus football facility, Rice Stadium, opened in 1950 with a capacity of 70,000 seats. After improvements in 2006, the stadium is currently configured to seat 47,000 for football but can readily be reconfigured to its original capacity of 70,000, more than the total number of Rice