National Historic Landmark -Oakmont Country Club

Noted for its nationally significant golf course, this is the oldest top-ranked course in the United States.

Its original layout is virtually intact and still in use for club and tournament play.

Generally considered to be among the most difficult golf courses in the world, it has hosted 19 major national championships and seven U.S. Opens, with two more scheduled - the U.S. Open in 2007 and the U.S. Women's Open in 2010.

Restoration of the course back to its original design is continuing and nearing completion.

Courtesy National Park Service National Historical Landmarks