The site of a concentration camp where inmates were made to take part in one of the largest counterfeiting operations in history is now hauntingly empty.

One of downtown Berlin's last reminders of its Communist past.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

An icon of International Style architecture on the outskirts of Rotterdam.

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

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

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

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

The 20-mile causeway that separates the Netherlands from the sea.

Home to the world's oldest functioning orrery.

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

This beautifully designed star-shaped fort was the premier defense system of the late 1500s.

This fairy tale forest hides scenes from some of the more obscure and bizarre Western nursery stories.

A dream-like maze full of strange art, surreal spaces, and fantasy landscapes to get lost in.

Brussels' favorite peeing boy has a sister.

A little sculpture with a large wardrobe.

Cozy basement bar sports an inventory of over 2,000 beers.

A whimsical bridge uses saxophones to pay tribute to two great men and the European Union.

Dedicated to the American general whose reply to a German demand for surrender was simply "Nuts!"

Visit a surreal landscape so otherworldly NASA actually used it to train the Apollo 17 crew.

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

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.

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