For just a few bucks, this Iowa funicular will let you feel like an 1800s fat cat.

A warning to the weak-kneed: This narrow bridge does its swinging eight stories high.

Home with Gothic windows featured in a famous painting.

Beating out all other concrete competitors, this massive garden feature's pointy hat has earned it a world record.

A half-mile long and three stories high, this bridge over the Des Moines River Valley mimics a descent into a mine shaft.

The birthplace of Karl Marx is now a museum dedicated to the communist revolutionary's life and work.

One man has carved a number of natural New Mexico caves into psychedelic sandstone temples.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

Walk in the footsteps of the gods and straddle two tectonic plates.

Medicinal spa created with the discharge from a geothermal energy plant.

A winding, blood-red tunnel of hardened lava navigable by foot.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

An encyclopedic collection of mammal penises.

Learn about Iceland's hidden folk at this school dedicated to the study of elves.

The summer tourists on these cliffs are thousands of seabirds.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

The oldest church in Iceland is one of the few to feature ornate decoration.

The sign at the garden gate reads: "These Plants Can Kill."

Several plaster noses are hidden in plain sight around London's Soho neighborhood.

A small island abbey is the final resting place of many medieval Scottish monarchs, including the real Macbeth.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

Even after the church tried to wipe the practice out, this pagan festival lives on each year in a small Scottish village.

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