This bomb shelter-themed bar has barely changed since it opened.

A huge musical instrument played by the ocean.

A century-old network of freight tunnels underneath the city's historic business district.

A new kind of theme park for adults off the Las Vegas Strip.

Originally built as a promotional giveaway, this suburban house was designed to be an IRL version of the Simpson home.

A Saint Nicholas-themed ghost town in the Mojave desert.

All of the 20 occupied houses in this mostly abandoned town feature some curious display of junk art.

Concrete crosses scattered across the Arizona scrubland which were used to align spy satellites.

Although now a decaying ruin, this stone cabin's history includes several notable figures.

The eroded core of an ancient volcano is now accessible by a short hike.

New York City's smallest piece of private property.

The first piece of public art dedicated to LGBT rights.

A multimedia experience that chronicles the atrocities of racism.

A natural dome made of volcanic glass in Inyo National Forest.

Towering basalt columns, a creation of fire and ice.

For decades, the largest tungsten producer in the U.S. was located in a spectacular setting in the high Sierra Nevada, with some of the workings over 11,000 feet.

An early 20th-century jail not far from the infamous Tombstone, Arizona.

A strenuous, unofficial trail leads to spectacular views in one of America's most remote national monuments.

This southwestern historic site was designed and built by an artist who wanted his work to "feel at home."

Visitors to this public park will also find the ruins of an old western fort.

This quiet chapel was central to a community of settlers who reclaimed an abandoned fort.

An Arizona museum with a collection of pharmaceutical oddities, including a jar of a gangster's chewed gum.

A Tucson museum and performance space full of found-object movable sculptures.

Some of Arizona's best spit-roasted tacos al pastor can be found at a weekend swap meet.