Abandoned Air Force base that has fallen into disrepair.

Abandoned hotel with adjacent lake and golf course.

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

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

Nuclear waste dump site now an environmental sanctuary.

Graffiti-covered ruins that were once part of a farm owned by a mental hospital.

A cobblestone alley with an interesting past.

A free, public museum dedicated to the fascinating science of sight.

Every year, over 25,000 monarchs overwinter in Pacific Grove.

An abandoned Cold War missile radar site.

This beautiful ridge-top trail is dotted by tiny homes apparently built by a group of itinerant fairies.

The sun acts as a key that only fits this giant keyhole twice a year.

Room 32 of the Alta Cienega Motel has grown into a shrine to the Lizard King.

Neoclassical Revival mansion and set of horror cult classic Phantasm.

Bits and pieces from the ill-fated Donner Party's winter cabins.

An "anarchical" no man's land, complete with garbage sculptures and a hobo-run "Landfillian Library."

A private home built to resemble the shape of a microscopic creature.

Celebrating the transformation of trash into objects of beauty.

The world's largest wooden trestle stretches across this desert canyon in Anza-Borrego Desert State Park.

A vast city of the dead, where the deceased outnumber the living by more than a million.

Over 315,000 preserved amphibians and reptiles in jars.

This Oakland fairytale kingdom, fiercely devoted to childlike whimsy, was an early inspiration for Disneyland.

The memorial to the victims of the Jonestown Massacre carries the names of 918 lost, including one name people wish wasn't there.

This infamous prison has a store where you can buy goods crafted by incarcerated people.