The highest point in Washington state is a volcano covered in glaciers.

The king of U.S. high points towers over every other peak on the continent.

The sump of the landlocked Carson River is a haven for wildlife.

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

Home to a forest of whimsical pygmy Coast live oak.

A wealth of seafaring history displayed on the California coast.

Formerly the world's largest, this Willy Wonka-esque contraption runs 24/7.

The first project by the Bureau of Reclamation illustrates both the upsides and downsides of reclamation.

Few other hotels can rival the grandeur of the Castle in the Rockies.

These once-beautiful historic graveyards are set against the barren Virginia City hills.

A deep toxic lake fills this abandoned open-pit copper mine, now a Superfund site.

An improbable water gap where the West Walker River, paralleled by a state highway, crosses the Singatse Range between Smith and Mason Valleys.

Two historic and closed cemeteries, separated by a low income apartment building.

Named for a prominent scout and explorer, this Wyoming state park encompasses a replica of an 1840s trading post, a 19th-century Army outpost, and early 20th-century automobile lodgings.

A bust of the entertainer and politician sits in an alcove at the Palm Springs Airport.

Visit a remnant California's Gold Rush, which locals claim is haunted by spirits from the past.

This colossal underground passage paved the way for large-scale drainage and access tunnels across the U.S., but it almost wasn’t built.

This pristine World War II airfield gives a comprehensive look at atomic development and aviation history.

What once housed a private club catering to Comstock Lode elite is now considered one of the West’s most haunted spaces.

A stretch of highway even lonelier than the so-called "Loneliest Road in America."

Allegedly haunted by Walt Disney himself, this inconspicuous lamp is always kept lit in his honor.

The rockpile was the founding landmark for the town of Gillette, and is now the home of the region's history.

You might recognize this historic Oregon mansion from its appearance in 'The Goonies.'

This open-pit mine is now an abandoned symbol of Bisbee's copper-mining heritage.