This statue was given to France by the United States to commemorate the centennial of the French Revolution.

France's most famous cemetery, with some of its most curious tombs.

Huge Russian Orthodox cemetery in danger of being converted into open public space.

A colorful piece of contemporary art cheerfully clashes with Lyon's historical architecture.

The world's largest reflecting pool is just two centimeters deep.

One of the largest museums in Ukraine remembers the story of the German-Soviet War in iconic, brutalist style.

Theme park featuring miniature replicas of European monuments.

A little sculpture with a large wardrobe.

Apartment complexes built into huge repurposed natural gas tanks.

Op-art architecture designed for happiness.

Macabre astrological automaton clock dating to the late 1400s.

This 1000 year old relic-filled cave monastery and UNESCO World Heritage Site also hosts an amazing micro-miniature museum.

The deepest metro station in the world.

A reconstructed medieval gateway that was the magnificent entrance to the capital city dating back to 1037.

When you've got to go, you've got to go.

340-foot statue built to honour the Heroes of the Soviet Union.

Abandoned for decades, trains still pass through the now-restored remains of one of Madrid's first metro stations.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

A church of bones, decorated with 40,000 human skeletons.

Climb inside an iron crystal magnified 165 billion times its normal size.

The largest bell in the world has been swinging high above a Cologne cathedral for almost a century.

This Dresden church was purposely rebuilt Protestant after being demolished in World War II.

An ancient knight and a symbol of the city's freedom.

The oldest museum in Russia is home to a fascinating collection of nearly two million anthropological artifacts and anatomical curiosities.