University of Chicago's Mandel Hall features a rich Victorian interior that can seat a whopping 960 audience members, all of whom should take a peek at the Tiffany & Co. window (given to the University by the class of 1902) and detailed oak woodwork. Formally opened in 1903 with a performance by the Chicago Symphony Orchestra, today the hall serves as the university's principal auditorium and is the stage for The University of Chicago Presents Concert Series.