Pittsburgh is the second largest city in the Commonwealth of Pennsylvania. It is the county seat of Allegheny County, Pennsylvania. Built on land surrounding the confluence of the Allegheny and Monongahela rivers, where they merge to form the Ohio river, Pittsburgh features 446 bridges, two inclines and a pre-revolutionary fortification. Residents of the city are called Pittsburghers. The downtown area is located on the triangular parcel at the confluence of the rivers. Pittsburgh is noted for bridges of all types throughout the city and is commonly known as the 'The City of Bridges' or 'The Bridge Capital' of the U.S. Pittsburgh apartments for rent comparison page shows most up to date rent information on Pittsburgh apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.