The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

This demon atop the Notre-Dame de Paris looks utterly bored.

Some big-name visitors have patronized this small-town library named for an oil man's daughter.

Once a kitschy symbol for a gift shop, this 38-foot seahorse is now a staple roadside attraction.

When the town wouldn't allow the fast-food behemoth to build a new restaurant, they put one inside an 1850 home.

Now a museum, this building was once a 14th-century monastery and the place where the founder of the Dutch nation lived and was assassinated.

One of Amsterdam's narrowest houses is located right across the canal from its widest.

This museum is dedicated to the most famous Irish writers in history.

The modern birthplace of Irish freedom.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

Dublin's most modern, visually spectacular bridge is modeled after Ireland's national emblem.

This building holds the embalmed remains of the leader of the Bolshevik Revolution.

Roughly 17 million letters to Santa have found their way to this Arctic Circle post office.

Hundreds of personalized inscribed planks make up this historic boardwalk.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

A layered tribute to the work of mosaicist Isaiah Zagar.

Ant sculptures march up the side of what used to be an iconic spot in punk rock lore.

From horses to stainless-steel trucks, this iconic Providence burger wagon is one of the oldest mobile diners in the country.

A giant green dragon crawls down from the roof of the Providence Children's Museum.

The city of Parma's cathedral is home to one of the greatest illusionistic frescoes of the Renaissance.

An abstract monument to a symphonic composer.

These enormous, stern-faced statues greet visitors with lanterns, and sometimes costumes.

A subterranean house of worship carved right out of the bedrock.

Sites connected to a woman born on a ship and spared by a pirate.