Irvine Auditorium is a performance venue at 3401 Spruce Street on the campus of the University of Pennsylvania in Philadelphia, Pennsylvania. It was designed by the firm of prominent architect Horace Trumbauer and built 1926–1932. Irvine Auditorium is notable for its nearly 11,000-pipe Curtis Organ, the world's 22nd-largest pipe organ (by ranks), originally built for the Sesquicentennial Exposition of 1926 and donated to the university in 1928. The building was opened in May, 1929.
A persistent but untrue campus legend holds that the building's design was a student project that received a failing grade. The legend continues that, many years later, the university received a major bequest in the student's will, on condition that his project be built.
Seating capacity is 1,260. (Prior to renovation the seating capacity was 1,976.) The octagonal auditorium featured side balconies that faced each other, at right angles to the stage. The building was restored and renovated in 1997–2000 by Venturi, Scott Brown & Associates, Inc.
- The firm's Chief Designer (from 1909 until its demise) was Julian Abele, an African-American, who contributed to and may have designed this and other notable projects. But, without evidence, attributing the Trumbauer firm's buildings wholly or primarily to him is conjecture.
- The World's Largest Pipe Organs
- Irvine Auditorium at University of Pennsylvania