The body of at least one victim of a construction accident was left behind in the collapsed pylon, buried under tons of concrete.

An elegant chandelier hangs over this ancient sewer chamber, now open for concerts and public tours.

A poignant mural honors the heroic teenage non-conformists who took on the Nazis and paid the ultimate price.

The final resting place for a wealthy Roman family, this tomb might be the best preserved of its kind outside Italy.

A church filled with the bones of hundreds of virgins martyrs—or so they say.

The largest bell in the world has been swinging high above a Cologne cathedral for almost a century.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

If the tunes of antique organs and musical marionettes don't intoxicate you, the draft beer certainly will.

This noble mash-up in eastern Luxembourg is part Medieval, part Renaissance, all castle.

An immersive projection art installation uses sound, scale, and light to take visitors inside classic works of art.

Natural history museum celebrating biodiversity with a parade of taxidermy animals.

This massive library holds what was once the largest book collection in the world.

This small corner bar is home to a rare 1930s dance organ that still plays tunes for one Euro.

Inspired by "The Starry Night" this Dutch bike path turns into a glowing work of art each night.

A UFO-shaped event building originally intended to be a science museum showcasing the future.

Devious political maneuvering and four ancient, working telescopes are central to the world's second-oldest observatory.

A market built atop boats is one of the few floating holiday markets in Europe.

Unsurprisingly, Holland is home to one of the most magnificent flower gardens in the world.

Birthplace of the "Cat in the Cradle" and a cluster of iconic, original windmills that let the Dutch tame the seas.

The Bloemen Route, or “Flower Route”, stretches 25 miles through prime Dutch tulip country as a result of “tulip mania,” the world’s first economic bubble.

It appears as if a man is standing behind this giant airport clock, painting the hands in real time.

The world's only museum devoted to the wonders of fluorescence.

This 22-floor tower's Skydeck offers panoramic views of Amsterdam.

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