Dupont Gym, Massachusetts Institute Of Technology, 120 Massachusetts Ave., Cambridge, MA

Originally built as a State Armory, but was later acquired by MIT and converted to a gymnasium in an early example of "adaptive re-use" on the MIT campus.
Opened in 1959, the building is named for David Flett DuPont, an M.I.T. student of Metalurgy, who contributed a million dollars toward the improvement of athletic facilities, whose bequest also facilitated the building of twelve outdoor tennis courts.
In 2012 it's known as the DuPont Athletic Center.

Jerry performed here on
5/7/70 with New Riders Of The Purple Sage and Grateful Dead