The unusual patterns in this rock formation result from two distinct modes of weathering.

A tunnel with windows, so you don't miss out on the impressive views.

An ode to one of the dirtiest jobs during the construction of the Boulder Dam.

A Norwegian-born sculptor created these soaring guardian angels at the entrance to Hoover Dam.

A secret fresh water spring for animals and humans alike hidden along the most famous road in the United States.

This once-booming Gold Rush town is now home to a herd of feral donkeys.

A sign at the end of the Santa Monica Pier marks the traditional end of the legendary American highway.

Thousands of turbines whir at the origin of North American wind power.

The "3rd largest" city in California is an empty mirage of suburbia in the middle of nowhere.

A collection of anti-communist sculptures stands watch in the Mojave Desert.

Like a kitschy mirage in the Mojave, this eatery serves up classic 50s-style diner meals and a dinosaur sculpture garden.

A former utopian healing center created by a huckster and built by derelicts.

A pair of large white marble lions guard this stretch of the Mojave Desert, and it is utterly mysterious how they got there.

The ghost town that ended up on Ebay.

An eerie natural formation that looks right back at you.

This unlicensed collection of fast-food memorabilia sits on the site of the first ever McDonald's restaurant.

These structures were inspired by both Native American shelters as well as, strangely, an ice cream shop.

Abandoned hotel with adjacent lake and golf course.

This massive statue of John Muir on the side of a California highway was carved from a redwood tree.

Far out of its comfort zone, this sequoia was planted as a symbol of the connection between Visalia and its neighboring national park.

A B-17 bomber stands as a memorial to the residents of Tulare County who served in World War II.

An interesting look into 18th-century American history.

This study room in the New York Public Library saw the creation of one of contemporary America's greatest traitors.

An abandoned Gold Coast-era mansion once intended for the exiled ruler of Albania, who never arrived.