This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.

The tallest outdoor elevator in Europe rockets passengers on a dizzyingly precarious ride to the top of a mountain.

These spooky and unusual stone formations create an underworldly landscape.

A nearly 500-year-old sculpture depicts a man eating a sack of babies, and no one is sure why.

This stately council chamber hasn't changed since 1545.

An ancient Egyptian temple sits within a modern European museum.

The remains of a medieval wall discovered in the basement of a jewelry store.

One of the Leiden's oldest pubs is also the birthplace of the Heineken star.

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

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

An awe-inspiring giant blue whale jaw bone stands in the center of this Dutch island.

A late-medieval Dutch castle with trick fountains in its whimsical water gardens.

Building Men of War and Indiamen from Holland's Golden Age.

One of the oldest masonic temples in the Netherlands, built in 1757.

This enormous storm barrier is one of the largest moving structures on Earth, with each arm taller than the Washington Monument.

Scale model of St. Peter's Cathedral (Rome) in the middle of a small Dutch town.

The Netherlands is home to a bridge printed out of reinforced concrete.

The birthplace of most all of Europe's space missions is here on the Dutch coast.

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

A trio of red, white, and blue stones embedded in the streets of Leiden are markers of medieval territory and law.

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

Science meets wall art to highlight the beauty of famous mathematical equations.

The bridges portrayed on EU currency aren't fictional anymore.

This imposing tower named after the mythical sword of King Arthur is considered the tallest freestanding climbing wall in the world.