A solar-powered primary school inspires hope and experimentation in a country ripe for energy innovation.

This sign marks the entrance to a tiny proto-state within the small country of Moldova.

Seventy-five miles of limestone caves host more than a million bottles of wine beneath a sleepy Moldovan town.

This striking structure is the Socialist-modernist centerpiece of a former Soviet spa resort.

An abandoned masterpiece of Soviet Brutalist architecture.

Open-air museum with a large collection of Soviet-era statues.

Launch site for nuclear war against Western Europe.

Once known throughout Europe, this tiny and unusually progressive 18th century micro-nation within Lithuania now lies in ruins.

A memorial to the murdered Jews of Kaunas.

An old hill fort covered in over 100,000 crosses is a symbol of Lithuanian nationalism and beliefs.

This former Nazi labor camp is now a poignant memorial, complete with giant Soviet-style monuments.

Built to ward off Napoleon's army, this city-sized abandoned Russian fort is now perfect for urban exploration.

This charming Latvian lane doubled as Baker Street on the Soviet Union’s version of Sherlock Holmes.

3,000 market stands in five former Zeppelin hangars.

A much-loved sculpture depicting the hero of a 1956 anti-Soviet uprising.

The world’s first statue of the late Apple co-founder.

One of the greatest collections of coins in the world is housed in the former mansion of an archeological pioneer.

Where commuters walk through remnants of an ancient Greek necropolis.

This apartment is a true time capsule of local life in Bulgaria during the Soviet regime.

The Grand Mall in Varna hosts one of the biggest collections of Soviet-era paraphernalia in Bulgaria.

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

An abandoned saucer-shaped monument in the Bulgarian mountains.

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

Climb into Albania's communist history while enjoying a spectacular ocean view.