Where commuters walk through remnants of an ancient Greek necropolis.

This 15th-century island fortress later served as home to the executioners no one wanted to live near.

Swarms of dainty flying insects swarm into the Petaloudes Valley to get busy.

A Bronze age settlement on the Greek island of Santorini might have been the inspiration for Plato's Atlantis.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

This legendary city has been a tourist attraction for centuries.

A minotaur, a labyrinth, and a dubious restoration pull in visitors from around the world.

A spectacular cave and a beguiling lake.

An homage to the medieval rulers of Bulgaria.

Sofia's legislative center is continuously reinventing itself.

A gigantic statue of a Russian soldier watches over the ancient city of Plovdiv, a prominent reminder of the Soviet period in Bulgaria.

A vast Communist-era exhibition space in the Bulgarian capital.

A mountain pass in Bulgaria's Balkan Mountains was the site of four historic battles.

"Unity, Creativity, Beauty."

Eastern Bloc nostalgia, anybody?

This massive stone and steel monument remembers a century-old battle that cost thousands of lives and nearly destroyed the city.

A collection of art from Bulgaria's time as a communist state.

This once-grandiose behemoth of a monument from the socialist era now sits quiet and closed up.

A striking symbol of the Bulgarian capital.

A Bulgarian monument to Russia's role in World War II is constantly being painted in pop culture protest.

This massive concrete sculpture is said to be the heaviest communist monument on Earth.

An abandoned saucer-shaped monument in the Bulgarian mountains.

An empty relic of the Moscow Olympics crumbles away in Estonia's capital.

A somber memorial at the site where hundreds of prisoners and civilians were executed in the aftermath of World War II.