Mount Diablo State Park, California

Mount Diablo is most famous for the views from the summit. It might only be 3,849 feet tall but it still is a dominant topographic feature in northern California. One of the reasons being the spectacular views from here as it is surrounded by low, rolling hills and broad, flat valleys. On a clear day one can see almost 200 miles.

It was established in 1851 and the Visitor Center is located in the historic stone building atop Mount Diablo's highest peak.