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

Geothermal waterfalls in Tuscany.

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

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

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

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

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

19th century pendulum and a clock restored by a rogue group of guerilla artists.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

Three floors of musical instruments coming from all corners of the world and hundreds of years of musical history.

The beautiful, ornate weather station is the most popular geocache in Salzburg.

The Columbia Road Flower Market is now open every Sunday, rain or shine.

This luxury shopping lane has been protected by its own tiny police force for over a century.

Explore nearly 400 years of English middle-class home life.

"Purveyors of traditional sweets and vintage treats."

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

Catacombs turned marketplace.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

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

The curios of pharmacist and collector Henry Wellcome.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

A hands-off space for graffiti artists to hone and display their skills.