Italian poet Dante Alighieri is entombed in this small mausoleum in Ravenna, and his hometown of Florence has never been too happy about it.

The oldest landmark of Toronto is a testament to shifting sands.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

This giant middle finger statue sends an unambiguous message to Italy's bankers.

Long-abandoned art nouveau baths beneath Milan's Piazza Oberdan.

No one is sure if the world's fourth-largest diamond had been found in a rubbish heap or was pawned by Napoleon's mom.

This still-celebrated home was a radical architectural experiment in 3D De Stijl.

Rotterdammers' dirty minds gave this Santa a dirty nickname and cursed it to a life of wandering.

Birthplace of the "Cat in the Cradle" and a cluster of iconic, original windmills that let the Dutch tame the seas.

The largest bell in the world has been swinging high above a Cologne cathedral for almost a century.

Da Vinci's equestrian statue, 500 years in the making.

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

The alleged house of the Virgin Mary is tucked away in a park and nature preserve on Mt. Koressos in Turkey and is holy to both Catholics and Muslims alike.

The largest 19th century panorama in the world still in-situ.

A seven-century-old jail tells a not-so-pleasant history of crime and punishment.

Hidden within a Netherlands crater is a stone bed that lets those who lie in it see the sky as a curved surface.

This centuries-old gothic monster has been converted into a sprawling, glossy bookstore.

Incredible labyrinth of man made caves.

This historical Netherlands fortress still bears the marks of its single siege.

This Netherlands museum holds a gloriously mechanical collection of ornate musical automata.

Before there were doorbells this bronze ear was installed for visitors to announce their arrival.

Remnants of cone-shaped fascist bomb shelters in Milan.

This museum was invented in a novel before being made real by the author.

Two very green residential towers cleaning the air in one of Europe's most polluted cities.