Cages that once displayed the bodies of executed leaders hang from a German church tower.

These quaint French houses dangle precariously over a precipice.

An unassuming Swiss institution houses Europe's largest toy museum.

These 19th-century gas tanks were remade into an apartment complex.

Over several decades, one of London’s most iconic city gates was dismantled, moved out of the city, and then moved back.

The extra platform at Gloucester Road has been used for art displays for over 25 years.

A wooden rollercoaster that still delivers a thrill.

The sweet story of how American cargo planes became known as "Candy Bombers" during the Berlin Blockade.

A Black Forest cuckoo clock theme park features one timepiece big enough to walk inside.

A unique showroom for bathroom fixtures featuring a giant toilet observation deck.

This sprawling, Brutalist estate feels like a city within a city.

This public amphitheater was once a key part of Monaco’s defense strategy.

An ancient Roman relief beautifully preserved on the façade of a house.

A 700-year-old drinking fountain turned charity for the less fortunate of Zurich.

The first statue to be added to Saint Peter's Square in over 350 years is an ode to migrants and refugees around the world.

Looking strangely like Rome's Colosseum, this unfinished tower has dominated the skyline for over 100 years.

The medieval woodcut-style artwork chronicles life in medieval London.

Sculptor Antony Gormley used chaos theory and fractal growth to design his tallest creation.

This stone in Lake Geneva was once the reference point used to determine altitude in Switzerland.

Unconventional site where the tracks of Zurich tramcars intersect.

A Swiss amusement park entirely dedicated to the theory of ancient astronauts.

Featuring a meatless buffet fit for kings, this family-owned Zurich eatery is considered the oldest vegetarian restaurant in the West.

Vines grow up the metal bars in this public park created from an old machine factory.

Traversing steep Alpine slopes, this engineering marvel is one of the longest and highest funiculars in the world.