340 bicycles, 65 feet high.

Singing sand that stands as the final remains of an ancient lake.

Carved by a waterfall in a hard-to-reach rock formation, this heart-shaped rock has inspired romantics for decades.

In the middle of an extremely unforgiving and desolate high desert is the most secret military facility in the world.

Despite being a perfectly pleasant place to be, Loyalton can't seem to attract any visitors.

America's most famous piece of self-built architecture.

During prohibition, corrupt city officials ran drinking dens under the streets of Downtown Los Angeles.

Historic funicular railway, believed to be the shortest railroad in the world.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

A winding path built in secret on the edge of the continent.

Abandoned bridge hidden deep in the San Gabriel Mountains.