Macabre astrological automaton clock dating to the late 1400s.

Rainbow-hued local gem in Venice.

This modest marker near Notre Dame identifies the very center of Paris.

The hidden lair of an alchemist rediscovered in a 2002 flood.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

This weird abode has inspired everything from the "House on Haunted Hill" to a robot hunter's pad.

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

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

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

Resting place of Hollywood's immortals is also site of summer film screenings.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

It should come as no surprise that the best view of the Hollywood sign is from Batman's lair.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

The abandoned zoo enclosures offer a perfect place to experience the other side of the bars.

Elevated freight railway turned wildly successful urban park.

High on a hill overlooking Los Angeles lives a world famous, high-power conical Tesla Coil.

The legendary building that needed ghostly approval before being built.

Eighty million natural history specimens call this gargantuan museum home.

A walk through the historic city center, under the streets of Seattle.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

The history of occult science is turned into a creepshow at this lurid Prague tourist attraction.