Florida might be at its most surreal in this museum devoted to the famed Spanish artist.

The most accurate timepiece in the world.

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

A museum dedicated to the alleged Roswell Incident.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

This shop and gallery is a modern-day cabinet of curiosities, unassumingly positioned along an urban thoroughfare.

A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.

Catacombs turned marketplace.

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

A monument to the thrice mayor of London who according to lore made his fortune by selling his rat-chasing cat.

The ruins of an ancient Roman tomb hidden in the basement of a trendy clothing store.

The oldest cemetery of modern-day Athens blends the modern and ancient worlds.

A sharp sculpture made of thousands of pieces of jagged glass.

An ancient octagonal weather station named for the eight Greek gods of wind.

A 2,000-year-old computer demonstrates remarkable engineering and astronomical precision.

Replicas of Apollo's leonine stone guard cats still line a sacred row in Greece.

Giant marble phalluses on the sacred island of antiquity.

The hallucinogenic center of the ancient world.

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

A painfully obvious spy house sits right across the street from the Russian Embassy.

The house where John Wilkes Booth conspired with his co-conspirators.

The unique traffic pattern named for an influential urban planner is also known as the Pedestrian Scramble.

It is said the legendary wizard once lived in this sea cave beneath Tintagel Castle.

This towering church is home to a world-famous organ and a treasure trove of medieval art.