This little Greek plateau is home to thousands of rustic, white-sailed windmills.

The historic tower houses of this nearly abandoned Greek town have been compared to the spikes on an iguana's back.

The abandoned summer estate of the former Greek Royal Family.

Local lore says two enemy dragons live within these breathtaking mountain lakes.

Large collection from the 3rd millennium BCE.

Massive, unfinished broadcasting station stands as a monument to the fall of communism.

These natural cliffs look like they are a part of an old castle complex.

Ruins of an early Roman Christian church dating back to the 4th to 5th centuries.

"Unity, Creativity, Beauty."

This ancient theater, restored in the 20th century, lives on as a venue for dramatic and musical performances.

Built in the Soviet era, this cableway system still runs gondolas from Odessa down to Otrada Beach.

Kyiv's answer to Muscle Beach is a Soviet-era gym made from scrap metal.

This underground transport hub doubles as an art gallery.

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

An Art Nouveau building covered in animal gargoyles and grotesques.

This derelict superstructure was a very important warning system for the Soviet military.

A window into the luxurious lives led by the landed gentry of Minsk before the 1917 Revolution.

Though it was heavily modified, fragments of the original medieval cathedral still survive.

The apartment building where JFK's assassin lived after defecting to the Soviet Union.

A tribute to Richard Feynman is carved into the land he planned to see but never got to visit.

Russia's own leaning tower was built on a tragic historical fable.

Inside the world's largest seed bank, WWII botanists elected to starve to death rather than compromise their collection.

What was once the base for Russia's first nature reserve is now a ghost town, right on the shore of Lake Baikal.

Perhaps the tiniest sculpture in Saint Petersburg is a little bronze finch inspired by a song.