This California tree is the single source of the state's entire orange industry.

This crumbling Death Valley mining complex was known for its use of giant, 20-mule team wagons.

NASA's leading space science lab started by a co-founder with deep ties to the occult.

Centuries of crashing waves carved out this small hole in the rock, which lights up at certain parts of the year.

Whiskey lovers, this is your happy place.

This stretch of beach along California's central coast is a busy highway for the largest seal in the northern hemisphere.

This sun-scorched lakebed contains samples of half the natural elements known to humankind.

This quirky UFO-shaped curiosity is often mistaken for the airport’s control tower.

Once close to extinction, there is no shortage of elephant seals on the beaches of Año Nuevo State Park.

A nursery specializing in strange and beautiful succulents and cacti.

One of the most unusual geological features, recognizable from a dozen hit movies.

A bigger-than-life pun that has become a beacon of altruism.

Canyon walls shrouded in ferns.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

L.A.'s oldest operating bowling alley is a beautifully restored homage to its speakeasy days.

One of the best places to see wild Colonial Spanish Mustangs in the United States.

This house turned museum chronicles the life and work of Richard Neutra.

Elevated freight railway turned wildly successful urban park.

A curious fountain that has no water and includes Satan, a crab, and 9 giraffes.

The only home that Alexander Hamilton ever owned has a history almost as troubled as his own.

The eerie remnants of an ancient forest were hidden under the sand for centuries.

Belly up to the bar in Cowtown, don't forget to buy some boots.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."