This former Masonic lodge has been transformed into part museum, part bar, all awesome.

Famed for its pie, this eatery has a hidden tunnel that allowed Catholics to secretly walk to church during the Reformation.

To enter this cluttered-yet-cozy sanctum of Belgian brews, ring the bell and tell the gatekeepers you've come “to taste beer.”

The patron of this extravagant Art Nouveau confection insisted that nothing less than a boat should project from its facade.

An open-air sewer system that was covered piece-by-piece over 300 years.

Rare wooden escalators lead deep down into an otherwise staggeringly monotonous tiled tunnel.

An expansive complex of subterranean tunnels is all that remains of one of Europe's most formidable medieval fortresses.

This First Nations monument is a peaceful spot with vast views of the Calgary prairie.

Hop aboard a charming bog train to explore this rare open-air museum of peat.

Amsterdam's former hotspot for public executions and dissections.

The gargoyles and grotesques of the 21st century are here—22 emoji built into a new building in the Netherlands.

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

A statue of the second-tallest Dutchman in history.

A bizarre form of natural mummification was discovered in the church of this Frisian village.

A Dutch clog company in the town of Zaandam loves the wooden shoes so much it made a museum for them.

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

Survival capsules find a second life as a unique hotel.

A seven-century-old jail tells a not-so-pleasant history of crime and punishment.

The world's first interactive human body museum also serves as a chair for a giant orange man.

Incredible labyrinth of man made caves.

Three connected pink triangles memorialize persecuted gays and lesbians throughout history.

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

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

Hidden within a Netherlands crater is a stone bed that lets those who lie in it see the sky as a curved surface.