An architect in Aspen used psychedelics as his muse while building this mushroom masterpiece.

The hallucinogenic center of the ancient world.

Travelers exchange letters with woodland creatures at this mini post office.

This semi-hidden Manhattan restaurant is based out of a loading dock.

There is an unmarked red button hidden over Houston's Buffalo Bayou that is just begging to pushed...

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

The history of occult science is turned into a creepshow at this lurid Prague tourist attraction.

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

The headquarters of a secretive order is also a beautifully-designed park.

An extensive collection of ancient Egyptian artifacts and mummies.

NASA's leading space science lab started by a co-founder with deep ties to the occult.

The headquarters of the Fraternitas Rosae Crucis, complete with Rosicrucian pyramids, all in the Pennsylvania woods.

A library of rare occult books in Los Angeles.

An alchemist's "magic door" stands in the middle of a Roman park.

A temple devoted to inner esoteric mysteries located in a California commercial strip.

A mechanized clock where a man fights off a dragon, crab, and rooster.

The oldest stone house in Paris was built by its most famous alchemist.

Popular tourist destination where witches in dark hats sell dried llama fetuses for good luck.

A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.

California's own medieval Italian castle, authentic down to the 300-year-old iron maiden in the dungeon.

This lesser known Hearst estate is a fairytale village built from the stolen bones of historic European buildings.

Commonly referred to as the most photographed Victorian home in the United States.

A trash dump made beautiful by nature's power.

This massive redwood tree has a hole in the base big enough to drive through.