This hotel was once home to a steamliner company and became the final rest stop for Europeans heading to the New World.

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

A statue of the second-tallest Dutchman in history.

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

This narrow Ghent alleyway is an officially sanctioned street art tunnel.

Each time a baby is born in Ghent, these streetlights flash in silent celebration.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

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

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

One of the newest mosques in a city filled with thousands.

Legend says if you stick your thumb in the hole and it gets wet your wish will be granted.

This cemetery features modernist statues as strange as its name.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

This bell stars in a tragic love tale and is said to make wishes come true.

The Polish capital has had a deep connection to its guardian mermaid for almost a millennium now.

The final resting place of more than 200,000 people, this is one of the largest cemeteries in Europe.

A statue honors the children who fought Nazis in Poland.

Warsaw's fantastically preserved gasworks...almost.

A once-fairy tale mansion now stands in a state of disrepair.

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

This spaceship sculpture in the middle of the Slovakian capital looks like it just crash-landed.