Strange rock formations tower above the river that snakes through this enchanting Icelandic canyon.

This brightly made over hotel hides decades of suicide, serial killers, and mysterious deaths.

Sitting on an Italian hilltop is this surreal fortress built by the mad inventor of electrohomeopathy.

Yale University's home for rare works, including the mysterious Voynich Manuscript.

Designed by Buckminster Fuller, this relic of the 67 Expo survived fire and ice.

The final resting place of a space program monolith.

A subterranean shelter remains intact under a busy Paris railway station.

A tropical paradise just a short trip from the opera house is filled with beautiful winged creatures.

Once the "Eighth Wonder of the World," this iron railroad bridge was decimated by a tornado.

2300-year-old Roman road connecting the empire.

The largest drain hole in the world.

A phenomenal assembly of pueblos in New Mexico is the most complete example of ancient ruins north of the border.

Abandoned bridge hidden deep in the San Gabriel Mountains.

Walk 2,300 feet above the ground on the "Troll's Tongue."

The "world's biggest dinosaur" once housed a creationist museum in its abdomen.

Houses are tucked between, on, and underneath giant boulders.

Tour the world's largest deep-hole dimension granite quarry, where you can view the plant where gravestones are made and roll a ball down the outdoor granite bowling alley.

This former coal gasification plant found a curious second life as a popular public park.

Now famous as the "Harry Potter bridge," this impressive concrete viaduct has long been an icon in its own right.

The ruins of this gorgeous clifftop castle look like something from a fantasy novel.

One of the largest-ever mental hospitals now sits abandoned, surrounded by 25,000 unmarked graves.

A hollow cement depiction of time's inexorable effect on the human body.

A picture-perfect town, perfect for blowing up.

Despite being one of the most photographed vistas in the Rockies these twin peaks are rightfully known as the "Deadly Bells."