This super steep hike ascends 2,000 feet in less than a mile.

There are eight natural springs around town, each with a slightly different taste.

While most of the games in this arcade take quarters, that would have been a small fortune when they were made.

This hands-on math museum believes in turning concepts into constructs.

A cake-themed art installation tucked away in historic Chinatown.

A blast from the past in central San Diego.

The world’s oldest active sailing ship.

This seaside production studio was built to film 'Titanic' and has been the wet set of choice for other Hollywood productions since.

A 19th-century Baja cantina that many say is the birthplace of the margarita.

A Lovecraftian altar of nightmarish bronze chairs sits ominously on a boardwalk in Puerto Vallarta.

Hundreds of trees made from glass bottles make up this forest on Route 66.

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

These markers are used to document elevation changes around the famed dam.

A professional special effects makeup artist’s collection of horror creatures and one-of-a-kind recreations on display in downtown Boulder City.

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.

Fans of the spicy bright-red sauce can tour where it's made.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

“It's the quality” (but probably also the drive-through donut tunnel) that has attracted diners since 1968.

Artist Jack Pierson made this surreal sculpture in honor of Wonder Valley, a countercultural community on edge of civilization.

Legend says one of the world's largest marine geysers is actually a whale that got wedged within the rocks.

The lead horse on a Disneyland merry-go-round that is older than the park itself.

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

The "Fun Spot of the Desert" is now a haunting ruin, and a reminder that putting a water park in a desert is a bad idea.