The University of Pennsylvania (commonly known as Penn or UPenn) is a private Ivy League research university located in University City section of West Philadelphia. Incorporated as The Trustees of the University of Pennsylvania, Penn is one of 14 founding members of the Association of American Universities and one of the nine colonial colleges chartered before the American Revolution.
The University of Pennsylvania (Penn) was one of the first academic institutions to follow a multidisciplinary model pioneered by several European universities, concentrating multiple "faculties" (e.g., theology, classics, medicine) into one institution. It was also home to many other educational innovations. The first school of medicine in North America (Perelman School of Medicine, 1765), the first collegiate business school (Wharton School, 1881) and the first "student union" building and organization (Houston Hall, 1896) were founded at Penn. All of University of Pennsylvania's schools exhibit very high research activity.