This balancing rock is one of Utah's most unusual geological formations.

These tourist trap caverns are said to be the former home of a legendary Pennsylvania Hermit.

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.

Where the oil industry began.

The only statue of its kind to commemorate Washington's beginnings as an officer of the British Colonial Militia.

Stay in an old lookout cabin atop Oregon's spectacular Winter Ridge.

This spectacular fault escarpment, a popular hang-glider launch point, extends some 30 miles long and towers about 2,500 feet over the valley floors to the west.

Oregon's only closed-basin hypersaline lake, an important stopover for migrating waterfowl, is in danger of drying up completely.

An abandoned early 20th-century gold mine in a spectacular setting overlooking Bridgeport Valley and the Sierra Nevada.

The world’s largest concentrated solar plant generates as many problems as megawatts.

This trailside hut was built in the late 1930s as a memorial to a young hiker.

Well-preserved ruins in the Pine Grove Hills of western Nevada.

Nevada's second-newest state park offers camping, fishing, hiking, and river float trips.

Thousands of acres of beautiful wild landscape in the Great Basin.

A huge railroad museum with over 100 pieces of rolling stock focusing on the railroad history of Pennsylvania.

The only remaining hotel on the 1860s Henness Pass route over the Sierra Nevada is being restored.

Multiple waterfalls and several historic CCC buildings anchor this state park in Oregon's Willamette Valley.

Snapshots of late 19th and early 20th century Americana, focused on life on the plains, are displayed in this museum.

One of the last "timber railroads" in the United States was finally abandoned in 1957.

A large wave-cut shelter, a major archeological site, overlooks the dry basin of Winnemucca Lake.

Spectacular volcanic cliffs along the Crooked River invite hiking, rock climbing, and photography.

This vintage short line in Amish country runs passenger steam train excursions and still hauls freight.

A little-known, but surprisingly large waterfall on the Little Truckee River in the northern Sierra Nevada.

Red ocher pictographs survive in this tufa rock shelter on the shore of an ancient lake.