This micro-nation may be some sort of prank, but its constitution sure seems official.

Despite the groans of archaeologists, this astounding groups of Bronze Age petroglyphs have been painted red for tourists.

A Gothic-inspired fish market is Gothenburg's best place to find loaves and fishes.

The world's biggest floating museum in Gothenburg, Sweden.

This Polish cave has housed a dragon, a brothel, and an enduring legend.

An underground city of salt.

The former Nazi concentration camp stands as a museum to remember this dark chapter in European history.

A whimsical bridge adorned with decorative dragons.

Go inside to really appreciate this 500-year-old technological masterpiece.

An abandoned Byzantine fortress and notorious prison.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

This still-celebrated home was a radical architectural experiment in 3D De Stijl.

A public urinal so pretty, it was declared a national monument.

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

The works of poetry's biggest names grace the walls of the city of Leiden, all carefully painted by hand.

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

This historic Dutch newspaper building is covered with media-themed details—and one unrelated oddity.

A lecture hall sink once used by Einstein and other noted physicists is now regarded as a strange science relic.

Rotterdammers' dirty minds gave this santa a dirty nickname and cursed it to a life of wandering.

These slanted cubic abodes are a creative if odd solution to a zoning pickle.

The ancient tomb acts as a calendar that keeps perfect time.