Seven Springs, the largest ski resort in Pennsylvania, was founded by German immigrant Adolph Dupre. He purchased two-and-one-half acres in 1928, and over the next twenty years built twenty-eight cottages of his own design to provide a place of rest and relaxation for Pittsburgh residents. From these beginnings, Seven Springs has grown to an 8,700-acre year-round convention center and resort. None of the cottages built by Dupre still stands. In the mid-1960s, seventy rooms were added to the main lodge, and a golf course was built. Today, the dominant structure at the base of the mountain is the 313-room high-rise hotel designed and built in 1974, just two years after the convention center. Hidden Valley, a smaller ski and golf resort, is less than twenty miles to the northeast on PA 31.