An ornate and disused early 20th-century building has been given new life as a fully operational structure, complete with offices, oyster bar, and a furniture retailer.

While the U.S. and Soviet Union were engaged in a space race, Poland built a UFO on the ground.

This towering statue of Jesus provided internet to the surrounding area.

Dubbed "Wistom" by locals, this abandoned factory is an urban explorer's dream.

This 13th century Gothic brick castle is the largest in the world by surface area.

The former Nazi concentration camp stands as a museum to remember this dark chapter in European history.

An abandoned Jewish sanatorium is tucked within the woods of Poland.

The giant metal fruit was once the symbol of a large farm.

The history of radiation is on safe display at the foot of a radiation science laboratory.

19th century pendulum and a clock restored by a rogue group of guerilla artists.

How did a French journalist’s grave become the sexiest statue in the cemetery?

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

Once a 19th-century brasserie, this McDonald's exterior celebrates Alsatian design and the "King of Beer."

The oldest stone house in Paris was built by its most famous alchemist.

Notorious artist squat renovated into legal studios.

Nine centuries-old fortresses guard the walls of this medieval Romanian city.

The possible imprisonment of Vlad the Impaler here earned the medieval castle its nickname, "Dracula's Castle."

This elaborately decorated, fairytale-like Romanian royal palace is one of the most striking castles in Europe.

This stunning concert hall has become a symbol of Iceland's national recovery.

A charmingly eccentric magma chaser presents his complete history of the island's eruptions since 1947, in cinematic form, just for you.

Travel deep inside of Europe's second largest glacier in the world's largest man-made ice cave.

The largest whale museum in Europe allows visitors to walk among life-size giants.

This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.