America's most famous piece of self-built architecture.

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

The world's largest underwater restaurant is submerged off the southern tip of Norway.

This church on a Tohono O'Odham reservation has stood since 1797.

A wild west cemetery in Tombstone, Arizona, provides a window into the Old West.

The Jewish section of the famous Boothill Graveyard was abandoned for nearly 100 years.

Hike the unusual hoodoos and rock formations that form this little-known natural wonder.

The former home of the army detachment that captured Geronimo.

The largest copper mine in Arizona, this enormous open pit emerges from the hills like an alien landscape.

This Old West prison built into the side of a cliff was said to be inescapable.

A cathedral resurrected from the ashes of one of Europe's greatest urban fires.

A 246-foot-high revolving restaurant rises unexpectedly from a forested Finnish hilltop.

Roughly 17 million letters to Santa have found their way to this Arctic Circle post office.

If you visit Santa's village, you can get your passport stamped to show you crossed into the Arctic Circle.

The fairy tale castle of the “fairy-tale king,” this was also the inspiration for Disney’s “Sleeping Beauty.”

The final resting place for the remains of 143 Habsburg royalty.

An unmistakable facial pareidolia in the Julian Alps also includes a fantastic tale.

This 42-foot tribute to the workforce still reminds us to pause and recharge.

The smallest museum in Basel, Switzerland, is a two-foot-by-two-foot window in the door of a 600-year-old house.

The former Nazi Germany concentration camp stands as a museum to remember this dark chapter in European history.

This lonely rock has been turned into a character loved and feared by children.

A small museum in a ward on the east side of Tokyo showcases the works of one of Japan's greatest ukiyo-e artists.

This historic castle is one of the oldest and most impressive in all of Japan.

Four-story concrete hotel never opened to customers.