A volcanic cone that formed over 600 years ago.

Will Geer's outdoor theater started as a mountain retreat for actors, musicians, and other artists who were blacklisted during the Red Scare.

California's largest steel arch bridge.

This futuristic bridge is one of the longest self-anchored pedestrian bridges in the world.

The cluster of boulders near Fort Irwin is covered in military insignia.

This nonsensical smiling boat shuttles passengers between two places they could've easily walked between.

The Route 66 institution that inspired Taco Bell also served as an important headquarters for Mexican-American social movements.

The only museum and archive west of the Mississippi that is dedicated to the study of Abraham Lincoln.

A giant knight, sex education, date shakes, and Jesus coexist happily in this Coachella Valley desert oasis.

For roadside fast food, pull over at the giant orange.

Traversing these canyons, visitors can take in stunning views and glimpses of the region's history.

At this former Prohibition speakeasy, electric birds signaled the arrival of hooch.

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

The second-largest gold nugget in existence, displayed in a Las Vegas casino conveniently named the Golden Nugget.

Peek inside Howard Hughes' garage at this Hollywood-themed art installation.

Originally conceived as part of a proposed Arizona State Capitol building in the 1950s, this structure built in 2004 stands as a monument to the architect's legacy.

This former water source for the City of Brooklyn is now a thriving natural wetland.

The cobbled together compound of a deceased artist which now serves as a filming location.

The headquarters of a secretive order is also a beautifully-designed park.

Located inside a former bread factory, this museum explores a century of transportation history through innovations that were extraordinary or failures—sometimes both.

This temple, built by an eccentric religious leader before his death, sits guarded and in ruins.

Today's aerospace industry can be traced back to one man and his gliders.

A strange house built only at night, with rumored mystic inspiration.

This concrete ship has had four careers - World War I tanker, floating amusement park, fishing pier, and artificial reef.