One of the oldest wine cellars in Germany is now a restaurant beneath Bremen's town hall.

The skeletal frame of a decommissioned gas-pumping station offers breathtaking views of greater Berlin.

A cablecar-station-turned-revolving restaurant with 360-degree views of the Swiss skyline.

A museum dedicated to linguistics, from how babies learn to talk to endangered and extinct languages.

A massive, secret marina for the Nazis' most formidable weapon in the Atlantic.

Where the high court feasted, frolicked, and high courtesans put their royal lovers' diamonds to the test.

Seven mini rowhouses fill the gap between 54 and 70 Westerstraat.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

Pull up and have a drink at a museum filled with hundreds of years worth of shipwreck artifacts.

The last of Amsterdam's original sea level markers remaining in place.

Some 80,000 Delft Blue tiles line the inside of this Amsterdam walkway.

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

Amsterdam's Red Light District leaves little to the imagination.

A poignant museum dedicated to the history of the Dutch resistance against Nazi occupation

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

A museum-like shop that has been producing clogs, brushes, and ropes for nearly 200 years.

The largest collection of the iconic wooden shoe in the world.

The largest airborne operation in history was launched to capture this bridge.

While most bridges allow roads to pass over water, this one allows water to pass over a road.

For the holidays, the tallest broadcasting tower in the Netherlands turns into one of the world's tallest Christmas trees.

Yup, that's a 330-foot yacht passing over the highway.

A large measuring stick marks the lowest point of a country that is partially under sea level.

This small museum located under the famous cube houses, is home to some 30,000 chess pieces.

Inside this metro station is a section of the city's former medieval fortification.