A dormant lightning machine equal to all the power in Russia.

This newly renovated Soviet-era outdoor exhibition center is bigger than the principality of Monaco.

Back in the tiny USSR.

This frozen-in-time summer home outside Moscow provides a look at Russian life in the 1950s.

One of the largest collections of socialist realist art shows the surprising depth of the official art of the Soviet Union.

A sculpture park of the tossed aside relics of the USSR, from Stalin to a massive Soviet emblem.

It's hard to believe the dizzying patterns covering this abandoned mine are completely natural.

This tiny Bulgarian town offers a stunning location in the mountains and a storied history.

UNESCO-protected ancient burial ground.

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

An abandoned saucer-shaped monument in the Bulgarian mountains.

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

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

An homage to the medieval rulers of Bulgaria.

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 flamboyant five-story building in Bulgaria resembles a crawling snail.

A spectacular Bulgarian cave resembling a devil's head with a waterfall rushing down its throat.