These paved rills bring freshwater into Altstadt and could spell wedding bells for whoever stumbles into the waters.

This futuristic German television spire is actually the world's largest digital clock.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

Pre-Nazi swastikas adorn the sculpted pachyderms flanking this brewhouse portal.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Copenhagen's celebrated theme park and gardens.

This pair of unsuspecting buildings are in fact the very first modern skyscrapers in Europe.

There's something in the air as history repeats itself at this museum dedicated to the Swedish pop band.

A golden plaque marks the site of the mysterious unsolved assassination of the former Swedish prime minister.

A 130-year-old urinal is the oldest of Stockholm and perhaps all of Sweden.

This gem from the industrial age helps visitors and residents alike traverse hilly Stockholm.

Stockholm's narrowest alley is barely over two feet wide.

Stockholm's deepest subway station is also a stunning ecological wonder.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

This series of Baroque passageways in Vienna's cultural center mix old architecture with modern art.

Vienna's diversity-themed traffic lights were inspired by the Eurovision Song Contest.

Baroque celebration of the end of the Great Plague of Vienna.

Op-art architecture designed for happiness.

This small, easily-overlooked sculpture recalls the first time Graz saw a live elephant.

Austria's ultra-modern art museum looks like Cthulhu's giant alien heart.

Resting in the middle of an Austrian river, this sci-fi "island" lets people cross in neon style.

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

This 2,000-year-old Doric bridge is still open to pedestrian traffic to this day.

Italian poet Dante Alighieri is entombed in this small mausoleum in Ravenna, and his hometown of Florence has never been too happy about it.