World's oldest operating science fiction and fantasy club, once home to Ray Bradbury and L. Ron Hubbard.

A cluttered and astounding collection of antiquities and curiosities.

A massive underwater sinkhole made famous by Jacques Cousteau.

Mysterious glowing orbs float through the desert night.

San Diego's most historic and haunted home.

A mysterious artist-run cabinet of curiosities and library.

A unique sculpture park that specializes in the huge and bizarre.

Hidden in plain sight on a pair of Manhattan subway tunnels are a pair of public instruments that sing to each other.

The walkable ruins of an 19th century hotel, destroyed in a horse cremation gone wrong.

"The House That Love Built" is shying away from "The House That Ghosts Love."

Nine Gardens in one—with tea service.

This crumbling UFO is one of only a few remaining "moveable ski chalets" of its kind.

An eerie, decaying ghost town destined to fade into the forest.

A park full of outsider art, created by college students studying outsider art.

Mutant vegetables, transgenic mosquitos, and atomic rodents span the walls of this one-of-a-kind museum.

An uber-secure, windowless tower of doom in the center of Manhattan is an NSA spyscraper.

This collection of Japanese luck idols beckons visitors with over 2,000 waving paws.

The oldest burial ground in the city, final resting place of city founders, Ohlone natives and murderers alike.

Designed by Buckminster Fuller, this relic of the 67 Expo survived fire and ice.

These banned cigarette vending machines now sell little pieces of pocket-sized art.

This Berlin island is home to a flock of free-roaming peacocks, as well as a historic ivory folly.

The oldest operating pharmacy in the world features 800-year-old recipes.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

This head-spinningly bizarre Depression-era art cave is wall-to-wall quartz and Jesus.