A tribute to a Ukrainian heroine who went undercover and killed several Nazi operatives.

The haunting complex honors the millions of Ukrainians who died in the forced famine under Soviet rule.

The deepest metro station in the world.

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

An Art Nouveau building covered in animal gargoyles and grotesques.

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

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

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

There is a mouldering Jewish cemetery hidden away in the capital of Moldova.

The largest wine cellar in the world is a 150-mile network of underground caves near the capital of Moldova.

A forgotten remnant of the Soviet Union, Transnistria is an unrecognized country hidden behind a heavily militarized border between Moldova and Ukraine.

A daily pyrotechnic celebration marks a beloved tradition during Valencia's festival season.

Vibrant street art created with mixed media.

Of the many chalices in the running for the Holy Grail, this one in Valencia Cathedral sure looks the part.

The largest lake in the Faroe Islands seems to be held hundreds of feet above sea level thanks to an optical illusion.

The abandoned village of Skarð aptly illustrates the idiom "Don't put all your eggs in one basket."

A formerly glacier-tipped volcano that inspired none other than Jules Verne.

Walk in the footsteps of the gods and straddle two tectonic plates.

This black church sits alone among a field of lava rock.

A modern Nordic Pompeii on the Icelandic island of Heimaey.

Iceland's largest lagoon is home to stunning multi-colored icebergs.

A stratovolcano located in the south of Iceland, with a long history of charted activity and a rich mythology attached.

Twisted girders are all that remain of an Icelandic bridge that was wiped out by a combination of volcanic heat and glacial floods.

The most powerful waterfall in all of Europe.