This dark, quiet forest on the outskirts of San Diego is dense with rumor and lore.

This former Norwegian sailor's church is slowly being taken over by ramshackle robot musicians.

Giant origami sculptures tucked into desert scenery beckon passers-by to explore further.

One of the last Jazz Age "Wonder Theaters" in New York City.

A spiritual vortex among the red rocks in Sedona.

The biggest pinball arcade in the world has over 600 pinball machines, and 300 arcade machines.

A tiny theater hidden in an alley plays a constant stream of short silent films for anyone willing to peer through the peephole.

An extraordinarily ornate museum in San Diego holds wondrous anthropological treasures.

A colorful architectural gem in Seattle's uniquely modern Central Library.

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

The most unique castle in all of Southern California, entirely constructed from repurposed materials.

The longest navigable underground river in the United States is home to countless blind and albino animals.

Graffiti, cars, and religion combine to create this jungle of scrap in the Nevada desert.

Stroll the grounds built by murder, suicide, and dirty oil money at one of Hollywood's most filmed mansions.

A masterpiece of LGBT art has been restored in what may now be the most valuable restroom in America.

An artist's cute bronze subway sculptures belie his violent artistic past.

Neon signs that grace the windows of Bergdorf Goodman's and Tiffany & Co. come from this studio in Brooklyn.

The Magical World of George Phar Legler.

An Escher-inspired library dedicated to the wonders of the human mind, yet closed to the public.

The artist James Turrell is repurposing an extinct volcano crater as an observatory to experience the cosmos.

A former utopian healing center created by a huckster and built by derelicts.

Treehouse motel and treehouse-building school.

These eerie outliers of the lightning bug family glow a mysterious blue color.

A huge musical sculpture and other art installations on the National Oceanic and Atmospheric Administration grounds.