Pittsburgh, a vibrant metropolis situated in the Commonwealth of Pennsylvania and serving as the county seat of Allegheny County, boasts of being the most populous city in Western Pennsylvania as well as Allegheny County, and is the second-largest municipality in Pennsylvania after Philadelphia. With a population of 302,971 as per the 2020 census, the city ranks as the 68th-largest city in the United States. The Greater Pittsburgh metropolitan area of Western Pennsylvania is anchored by this bustling city, which stands as the hub of a sprawling population of 2.37 million people that is the largest in both the Ohio Valley and Appalachia. This makes it the principal city of the greater Pittsburgh-New Castle-Weirton combined statistical area, extending into Ohio and West Virginia, with a population ranking as the 27th-largest in the United States.
Situated in the southwestern region of Pennsylvania, Pittsburgh is a prominent city that rests at the confluence of two vital rivers, the Allegheny and Monongahela, which merge to form the Ohio River. The city has earned a reputation as both "the Steel City" due to its significant contribution to the U.S. steel industry, and the "City of Bridges" boasting a staggering 446 bridges. Pittsburgh flaunts a majestic skyline consisting of 30 towering skyscrapers, two inclined railways, a pre-revolutionary fortification, and the Point State Park that occupies the confluence of the two rivers. The city was pivotal to the Atlantic coast and Midwest as the mineral-rich Allegheny Mountains made the region a contested ground for French and British empires, Virginians, Whiskey Rebels, and Civil War raiders.