In addition to its 19 graduate programs in the arts and sciences, Dartmouth is home to three separate graduate schools. The Geisel School of Medicine is located in a complex on the north side of campus and includes laboratories, classrooms, offices, and a biomedical library. The Dartmouth–Hitchcock Medical Center, located several miles to the south in Lebanon, New Hampshire, contains a 396-bed teaching hospital for the Medical School. The Thayer School of Engineering and the Tuck School of Business are both located at the end of Tuck Mall, west of the center of campus and near the Connecticut River. The Thayer School comprises two buildings; Tuck has seven academic and administrative buildings, as well as several common areas. The two graduate schools share a library, the Feldberg Business & Engineering Library. In December 2018, Dartmouth began a major expansion of the west end by breaking ground on the $200 million Center for Engineering and Computer Science. The Center will house the Computer Science department and Magnuson Center for Entrepreneurship. In October 2019, construction began on the Irving Institute of Energy and Society. Both are scheduled to be completed by fall 2021.