One of the oldest libraries in the world is still operating and contains the oldest existing document in the Italian language.

A whale rib was used to advertise the store by the arch that offered exotic goods from far away.

These elaborate gothic monuments honor Verona's medieval lords.

Not far from the more famous House of Juliet, visitors will find the supposed residence of her lover.

This medieval castle was reconstructed by Carlo Scarpa.

In 1999, a new equine figure was cut into this English hillside near the site where an older white horse had previously appeared.

Locals call it the "Give Peas a Chance" bridge because of its distinct graffiti.

A plaque claims this artwork outside a children's hospital was used in the 1998 Quidditch World Cup.

Built as part of a "sludge fleet" that transported sewage, this historic steamship now mostly moves people.

The statue of a legendary giant who carried Christ and shouldered the world's sins.

A black cat protests the City Guild in Riga's Old Town.

This bridge's unique architecture honors nautical heritage and encourages self-awareness.

This ordinary street was made infamous by a legendary visit from the devil.

Copenhagen's celebrated theme park and gardens.

During the Soviet era, the spire of this longstanding church was used as a radio transmission tower.

Quirky Welsh observatory unites art and science.

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

Before becoming a poet John Keats studied here to become a surgeon.

Gothic tower where Lord Alfred Tennyson wrote the poem "The Sleeping Beauty."

This cannonball embedded in the side of an Edinburgh house once served a surprisingly pedestrian purpose.

In 1329, Christine Carpenter entered this small stone cell in the hopes of becoming a living saint.

London's Victorian Tower of Babel.

In addition to escorting prospective couples to and from ballrooms, this lane was also a place for gentlemen to settle scores.

Now home to a drinking establishment, this building has a macabre history.