The University of Pennsylvania is a private Ivy League research university in Philadelphia. It is the fourth-oldest institution of higher education in the United States and is ranked among the highest-regarded universities by numerous organizations and scholars. While the university dates its founding to 1740, it was created by Benjamin Franklin and leading Philadelphia citizens in 1749 . The University has four undergraduate schools as well as twelve graduate and professional schools. Schools enrolling undergraduates include the College of Arts and Sciences, the School of Engineering and Applied Science, the Wharton School, and the School of Nursing. Among its highly ranked graduate schools are its law school, whose first professor wrote the first draft of the United States Constitution, its medical school, the first in North America, and Wharton, the first collegiate business school. Penn's endowment is US$20.7 billion, putting it amongst the wealthiest academic institutions in the world, and its 2019 research budget was $1.02 billion. Penn was one of nine colonial colleges chartered before the U.S. Declaration of Independence when Benjamin Franklin, the university's founder and first president, advocated for an educational institution that trained leaders in academia, commerce, and public service. The campus, in the University City neighborhood of Philadelphia, is centered around College Hall, and notable landmarks are Houston Hall, the first modern "student union", and Franklin Field, the first double-decker college football stadium. Penn also is the home of the Morris Arboretum, the official arboretum of the Commonwealth of Pennsylvania, which is located 15 miles northwest of the campus, in the Chestnut Hill section of Philadelphia. The university's athletics program, the Quakers, fields varsity teams in 33 sports as a member of the NCAA Division I Ivy League conference.