An ancient tomb that still stands in Portugal.

This castle has links to Portugal’s founding and struggles for independence.

This giant sculpture made of trash is a critique of society's wastefulness.

Portugal’s highest lighthouse has one of the most impressive focal planes in the world.

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

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.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

These lights mark the area of Rotterdam that was bombed and burned in 1940.

An art installation memorializing a tram stop, which became a tram stop.

This hotel was once home to a steamliner company and became the final rest stop for Europeans heading to the New World.

Old ships and machinery fill a historic harbor in the city that's home to Europe's largest port.

A huge teapot illuminates a home for the elderly.

A modern reimagining of a medieval city gate.

This charming pup is meant to celebrate the youth and stubbornness of the city's students.

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

This towering church is home to a world-famous organ and a treasure trove of medieval art.

A dramatic art installation features a BMW flying out of a building in Rotterdam.

Built by crowdsourcing, this wooden foot bridge saved a part of Rotterdam that was languishing in wait of city funding.

These slanted cubic abodes are a creative if odd solution to a zoning pickle.

A Dutch passageway's artistic, aquatic-themed makeover pays tribute to the capital city's famed waterways.

This small town in the Netherlands has no roads but instead, miles of canals and over 100 bridges.