Dr. Strangelove-esque tours reveal the inside a bunker once reserved for Stalin himself.

This immaculate and historic water garden culminates in a massive stone dining table with an inset fountain for chilling the wine of the Cardinal's guests.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

One of America's first dinosaur parks gives a window into Depression-era paleontology.

Defying all odds, this lonely little tree found a home on a log sticking out of a Canadian lake.

Railways may have forged this quintet of lovely tunnels, but now they are open to hikers.

Unlike many reclaimed, abandoned mines, this Canadian cave system is still just a dangerous maze.

An old world fairytale-land with over 350 fairy folk figurines hidden amongst 800 year old cedars.

Local legend has it that an old, decaying staircase outside this cemetery is haunted by dozens of ghosts.

A wild west land agreement was etched right onto this historic Idaho stone.

This angular Dwarven tunnel cuts through a mountainside in Glacier National Park.

The remote outlaw hideout of Jesse James, Butch Cassidy, and the Sundance Kid.

A small island less than half a mile from Venice is a forbidden island with a dark and twisted past.

Stunning wetlands ablaze with pink lotus flowers.

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

An eccentric inventor's castle home with its own indoor weather system.

The oldest building in Vancouver's Chinatown is now home to one of Canada’s largest contemporary art collections.

A gothic palace of endless stalagmites and pseudoscorpions waits within one of the world's most beautiful caves.

A reproduction of earth's many biomes.

Bizarre lunar-like landscape with thousands of large stone "hoodoos."

Outsider Art Community.

The world's longest known cave system.

Canyon walls shrouded in ferns.

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