Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

Mounds, rune stones, and a 1,000-year-old church, left behind by Denmark's first two kings.

The original home of the Lego has a huge amusement park dedicated to the iconic plastic toy.

Four alabaster giants contemplate the tides on the shore of Denmark.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Copenhagen's celebrated theme park and gardens.

A whimsical bridge adorned with decorative dragons.

This one-time health resort was used by aristocrats around the world.

This is not only one of the oldest collections in Europe, but also possibly the most beautiful.

Sweden's "good old days" painstakingly re-created in a model village.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

It houses the remains of a 17th-century version of the Titanic.

Pilgrimage site for star-crossed lovers.

France's high-tech, future-themed amusement park.

The opulent home that inspired Tintin's Marlinspike Hall and the adventures within.

This ancient theater was once the home of fierce gladiatorial battles.

A series of abstract, silly sculptures represent the works of a great modern classical composer.

The great Italian Renaissance painter was laid to rest here in the Chapel of Saint-Hubert.

The former home of France's controversial pop maestro is almost completely covered in ever-changing tributes and graffiti.

Historic medieval fortified city in southwest France.