A tribute to smugglers and the Butter Wars.

Not many houses move across borders, this one did it twice.

A reconstructed World War I-era communications array that was once hidden in plain sight.

An intricately carved Viking church overlooks a glistening fjord.

The world's first and only escalator for lazy bicycles and their daunted riders.

The vast chamber inside this abandoned cooling tower looks like something out of a sci-fi dystopia.

A magical and peaceful ruined Cistercian abbey in what is now southern Belgium.

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

This mine is home to the largest man-made hole in Europe.

Twisted buildings adorn the banks of the Rhine river.

This futuristic German television spire is actually the world's largest digital clock.

A marble Lucifer hides behind the pulpit of this Gothic cathedral.

Germany's longest suspension rope bridge.

This German art chapel is perfect for those who like their worship hard, modern, and utterly alien.

This former Nazi castle was built as a school to train what would have been the future of the Third Reich.

A gender-bending antihero's grave, where lies the inspiration for both book and film.

Sculpture designed by Turkish artist and professor Mehmet Ali Uysal.

Hiding the longest subterranean river known in the world.

An early 20th-century sanatorium, long abandoned and now being reclaimed by nature.

The highest point in Belgium is a staircase to nowhere.

Walk or bike along a narrow strip of Belgium sandwiched by German territory.

Museum covers every step of the chocolate-making process, from cultivation to the finished product.

This bakery and museum offers tours of the tastes and mythology of Aachen's signature spice biscuit—just don't ask for the recipe.

A distinctive former power plant turned university lecture hall looks like it could make you breakfast.