Take a drunken tour inside the world's largest known geode.

A 30-acre garden inspired by the principles of modern physics.

This little museum is built on a theater that was once a wildly elaborate speakeasy.

A library of rare occult books in Los Angeles.

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

A DIY art gallery/music venue/lecture hall dedicated to video game culture.

This naturally-sourced hot spring is now home to a clothing-optional resort.

Two thousand artifacts from around the world collected by one woman who loved to travel.

A museum of carnival attractions where you are invited to ride the rides.

This upscale streetwear store is hidden behind a fake Snapple machine in the back of a deli.

Where beautiful signs live on forever.

A hand-built folk art installation covered with messages of God's love.

Hidden beneath the streets of London is a secret subway that only carried mail.

This unique structure in suburban Austin is made up entirely of other people's castaways, and constantly changing.

A hospital closed seemingly in the middle of operations, leaving behind fodder for horror films and ghost hunters.

A pair of slides and a tree-lined stair corridor have been an urban oasis for nearly 40 years.

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

Seemingly grown on some other world, these New Mexico rock formations look like a disused science fiction set.

The haunting "Hell House Altar" is one of the few remnants of an abandoned college that has been a magnet for local legends.

Cabaret where the show girls are all androids, and the patrons couldn't be more pleased.

The world's only international cryptozoology museum is host to an unrivaled collection of mysterious objects.

Two stunning 17th-century libraries and a cabinet of curiosities.

Olfactory delights in San Francisco's Botanical Gardens.

Home to items never before seen by the public.