Pennsylvania Hospital is a private, non-profit, 515-bed teaching hospital located at 800 Spruce Street in Center City Philadelphia, The hospital was founded on May 11, 1751 by Benjamin Franklin and Thomas Bond, and was the second established public hospital but had the first surgical amphitheatre in the United States. and its first medical library. It is part of the University of Pennsylvania Health System. The hospital's main building, dating to 1756, is a National Historic Landmark.