Elephant seals and sea lions have turned the abandoned buildings on this island into their endangered love shack.

A gothic palace of endless stalagmites and pseudoscorpions waits within one of the world's most beautiful caves.

This small monument to the great inventor contains a time capsule and a Wi-Fi hotspot.

The garage at the childhood home of Steve Jobs was a hangout for the founders of Apple, even if they never built computers there.

This historic estate on the east shore of Lake Tahoe was home to an eccentric millionaire (and his pet elephant, Mingo).

The smallest country in the world.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

One of the largest, oldest, darkest, quietest motel rooms in the world.

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

Its dark depths conceal millions of rare, delicate crystal formations.

A "gravitational anomaly" located in the redwood forests just outside of Santa Cruz, California.

Hopeless romantics will swoon over the sweet story behind this bright and colorful home.

One of the most elaborate displays of Jellyfish is on display at the aquarium.

This little valley along Highway 1 is engulfed by thousands of lilies during the spring season.

Semi-recognized center of the world, with many oddities.

This Big Sur waterfall drops 80 feet directly into the Pacific Ocean, and inspired the hillside house up top.

A UFO scrapyard in the California desert.

Brightly colored 30-foot-tall totems light up the desert sky just outside Las Vegas.

An underground mansion with fruit-bearing trees and grapes growing beneath the surface of central California.

Cambria's most unique B&B features creative surroundings and fantastic food.

A Mysterious Masonic tomb in San Luis Obispo.

The tragedy of the Japanese internment camps is remembered here by a stark "Soul Consoling Tower."

The rocks in this arid basin leave trails of movement behind them.