A deserted hodgepodge of experimental structures designed by nearby university students.

Travelers leave tea kettles in a remote part of Death Valley as part of a mysterious, decades-old tradition.

Fourteen curious and controversial white bunnies sit in a circle near Newport Beach City Hall.

Along a California highway is a kind of Jurassic Park made of metal.

This impressive tunnel was dug entirely by hand over the course of 36 years.

A popular tourist cave with a dark past.

Mexican food and folk art.

A volcanic tunnel illuminated by natural skylights offers a shaded respite from the desert sun.

Megachurch turned Catholic church comprised of 10,000 glass panes.

Life in this isolated, hilltop lighthouse was lonely, but it sure was lovely.

A desert ghost town—occupied for only 12 years—was once home to more than 500 silver mines.

San Franciscans leave gifts and messages for the magical beings that live behind the tiny, mysterious door installed on a tree in Golden Gate Park.

One of the last free public hot springs is decorated with hippie art.

With the touch of a button, you can read a randomly selected short story.

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

This rare example of a "tidefall" is a spectacular drop from the cliffs down onto the beach.

This naturally heated mountainous creek has created a group of neon blue pools of potentially deadly boiling water.

The largest permanent Monopoly board makes one of the longest games even bigger.

Big gun installations, built over a massive cemetery, now abandoned & hidden in trees.

The "world's biggest dinosaur" once housed a creationist museum in its abdomen.

Trails through lava-carved tube-caves display sparkling bacteria and a rich history.

Stripes of flowers bloom each spring in a 50 acre rainbow of color.

One man's vast collection of artifacts and ephemera from matchbooks and postcards to vintage neon signs and cars.

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