Buried five stories underground, this Soviet bunker is packed with gas masks and Cold War paraphernalia.

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

A steampunk-styled three-floor factory churning out art, activism, and electronic beats.

Macabre astrological automaton clock dating to the late 1400s.

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

This aromatherapy shop and mini-museum cofounded by the Sigur Rós frontman documents Icelandic history through scents.

An ancient Egyptian temple in the middle of Madrid, Spain.

The oldest restaurant in the world is this old-world Spanish eatery, still known for its suckling pig.

In the depths of the Everglades, one man has dedicated his life to studying the elusive Skunk Ape.

Mysterious meeting place for UFO hunters near Area 51.

In the middle of an extremely unforgiving and desolate high desert is the most secret military facility in the world.

Back in 1952, you could get a mushroom cloud chaser with your atomic cocktail.

A collection of haunted objects and macabre oddities under one roof.

One of the world's tallest Ferris wheels takes visitors high above Las Vegas in a spinning party room.

Stepping away from the glitz of mobsters and casinos to learn about the other history of Vegas.

A Norwegian-born sculptor created these soaring guardian angels at the entrance to Hoover Dam.

This small Catskills village has six independent bookstores and more bookshops than restaurants.

This outpost of America's most popular fast-food restaurant is housed inside a palatial mansion.

Final resting place of one of the classic authors of horror literature.

Last residence of H.P. Lovecraft featured in his story "The Haunter of the Dark."

Tubing through a cave lit with glowworms is a magical underground experience.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

Breathtaking and huge 430 year old maps of Italy.

A building so large that it has its own weather.