A towering monument to war, located on a beautifully peaceful hill.

The last remnants of a massive medieval wall that once encompassed the city of Berlin.

A restaurant and observation deck built in a unique broadcasting antenna.

This Berlin island is home to a flock of free-roaming peacocks, as well as a historic ivory folly.

An eerie, derelict amusement park in Berlin.

A 12th-century fortress containing some of Berlin's oldest buildings.

Home to 10,000 medical specimens including the remains of Rudolf Virchow's extensive collection of pathological specimens.

An early 19th-century English style garden hidden in the Rotterdam cityscape.

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

The world's first floating farm is staffed by one human, three robots, and 35 cows.

This colorfully-painted tunnel links two distinct parts of a historic neighborhood.

The former headquarters of history's oldest megacorporation.

This bird-loving brewery is situated in an old municipal bathhouse, nestled beside a 300-year-old windmill.

The world's first zoo for microbes collecting the horrible and wonderful things living on and around us.

Established in 1638 to battle the Black Death, Hortus Botanicus Amsterdam is a treasure trove of rare flora.

One of the oldest, well-preserved water treatment facilities in all of Europe.

A plaque marks the spot where the saint was shoved off the Charles Bridge and into the river.

Steadily reminding Czechia of its past.

An existential riddle in the world's largest ancient castle.

What looks like a crashed Zeppelin is actually a bright, airy reading room perched atop a modern museum.

A mocking tribute to the past and modern leadership of Prague.

This artificial cave looks like something out of a fairytale.

A collection of anatomical samples from one of the first anthropologists to suggest that humans reached North America by crossing the Bering Strait.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”