The valley has a mixture of farmland, woodlots, and a number of working and abandoned quarries. Bellefonte, the county seat of Centre County, is the largest municipality completely within the valley. The Pennsylvania State Correctional Institution - Rockview, the Nittany Mall, the Pennsylvania Transportation Institute and University Park Airport are large facilities located in the valley. State College, Pennsylvania and the Pennsylvania State University main University Park campus lie at the southern end of the Nittany and Penns Valleys, and this area is also known as "Happy Valley".