Pittsburgh (population 305,704) is situated in the US Commonwealth of Pennsylvania. It serves as the county seat of Allegheny County. Regionally, it anchors a seven-county metropolitan area of the Ohio River Valley and Appalachia with a total population of approximately 2,356,200.
Pittsburgh is recognized locally as "The City of Bridges" for its 446 bridges. Downtown Pittsburgh has a diversified economy and an urban infrastructure featuring 151 high-rise buildings and two inclined railways. The central business district of Pittsburgh forms a triangle of land, known as the Golden Triangle, on the Allegheny Plateau surrounded by the Allegheny and Monongahela rivers at their confluence, where the Ohio River is formed. Pittsburgh ranks 25th within the United States for urban jobs and sixth in job density. "The Steel City" was formerly mainly a city which manufactures steel.
The city of Pittsburgh has benefited from the contributions of two wealthy Pittsburgh families, Carnegie and Heinz. Heinz Hall is the venue for the world-class Pittsburgh Symphony Orchestra. The Carnegie Museum of Art boasts a stunning collection of art, featuring masterpieces by van Gogh, Monet and other important artists. Also situated there is the Heinz Architectural Center. Pittsburgh was the home of famed artist Andy Warhol, whose works are showcased within the Warhol Museum. Frank Lloyd Wright's seminal Fallingwater home is open for tours in nearby Mill Run.
Expanding beyond its roots in steal production and heavy manufacturing, the Pittsburgh area economy has diversified to provide substantial professional and business opportunities. Ten Fortune 1000 companies are have their headquarters here. Popular businesses consist of Mellon Financial, Dick's Sporting Goods and H.J. Heinz. United States Steel is the largest company with head office in the area.
The cities major industries include biotechnology, advanced manufacturing, healthcare, financial services, high technology, retail and medicine.
There are various recreational areas and parks in the city of Pittsburgh. The Raccoon State Park is a big city park featuring boating, water sports and fishing on Racoon Lake, as well as horseback riding, hiking, cycling and cross-country skiing. Point State Park, located at the actual point of convergence of the Monongahela and Allegheny rivers, is called simply as "the Point." Excellent downhill skiing opportunities are available close by within Seven Springs, Hidden Valley and Blue Knob. Located within the Laurel Mountains at an altitude of almost 3000 feet, Seven Springs is the biggest ski area within the state of Pennsylvania consisting of 17 slopes.
Outside of the city's downtown core can be found various cultural, educational and medical institutions, like Carnegie Museum and Library, the University of Pittsburgh and Carnegie Mellon University.