"There's nothing there," and other lies the KGB told us.

Golden cobblestones remember a time when this small alley was used to avoid having to give a Nazi salute.

These bronze pamphlets remember a remarkable group of Germans who fearlessly opposed the Nazis in the very center of their power.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

This mosaic-lined medieval church was built by the world's first admiral and still holds mass in ancient Greek.

A prohibition-style speakeasy takes up residence in the last Victorian residence in Hollywood.

Giant Redwood-themed cafeteria operates under the golden rule, "Dine Free Unless Delighted."

Non-profit time travel mart sells goods you would need for a trip through the fourth dimension.

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

World's largest collection of serial killer artwork and other macabre exhibits.

A museum dedicated to the history of Tokyo's often-overlooked working-class district.

This small 16th-century church in Athens is almost entirely surrounded by a modern building.

A network of concealed passageways lies within a busy London Underground station.

Walking by this fence is like strolling along a portal to various fictional worlds.

The skull of the patron saint of lovers lies in the Basilica di Santa Maria in Cosmedin—maybe.

2300-year-old Roman road connecting the empire.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

The final resting place of the poets Shelley and Keats.

The yawning maw of this pagan visage is said to bite off the hands of liars.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

An alchemist's "magic door" stands in the middle of a Roman park.

Architectureal fantasy quarter of Rome.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

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