MIT
Kresge Oval
The Kresge Auditorium designed by noted architect Eero Saarinen and built in 1953; the building named for its principal funder, Sebastian Kresge, who founded SS Kresge Stores which became Kmart.
A remarkable thing about MIT : it is open to the public, who mingle in the Great Dome, Mass Ave, as students race to afternoon classes.