The downtown area, known as the Golden Triangle, includes Gateway Center, a landscaped hub of office and hotel space. Pittsburgh is the seat of Carlow Univ., Carnegie-Mellon Univ., Chatham Univ, Duquesne Univ., and the Univ. of Pittsburgh. The Pittsburgh Symphony Orchestra, the Heinz Hall for the Performing Arts and neighboring theaters, the Carnegie Institute's art and natural history museums, the Carnegie Library, the Andy Warhol Museum, and the Senator John Heinz History Center are noteworthy. On the Univ. of Pittsburgh campus is a memorial hall dedicated to Stephen Foster, who was born (1826) in Lawrenceville, now part of the city.
Pittsburgh has a fine park system, of which Schenley Park is the principal unit. The blockhouse of old Fort Pitt is preserved in Point State Park. Two botanical conservatories, the Buhl Science Center, a planetarium, a civic arena (with a retractable dome), an aviary, the Flag Plaza, and the Pittsburgh Zoo are among the city's other features. Pittsburgh is home to the Pirates (National League baseball), Steelers (National Football League), and Penguins (National Hockey League). A casino opened in the city in 2009.