An Allegheny County borough, McKees Rocks runs along the Ohio River and is known for its iron and steel interests. The area was first inhabited by Native Americans, later industrialized, and is undergoing further development. It contains the McKees Rocks Bridge, the longest bridge in Allegheny County at 7,293 feet. The area focuses on the arts, with the Father Ryan Cultural Arts Center having opened in 2008, and aims to engage the students of the Sto-Rox school district, which serves the McKees Rocks and Stowe townships. It is also home to the "Bottoms" neighborhood which contains the McKees Rocks Indian Mound, a designated historic landmark and location of the oldest human bones in eastern North America.