This incredible stone temple is a monument to death, victory, and fantasy architecture.

Dozens of padlock-trees along the Moscow River.

Museum design and public transportation meet in this unique Russian train car.

Former headquarters of the KGB.

The gorgeous entrances into the city's underbelly look more like grand halls than subway stops.

This building holds the embalmed remains of the leader of the Bolshevik Revolution.

Moscow's other, lesser known kremlin is a fairytale-like cultural complex modeled after Old Russia.

Dr. Strangelove-esque tours reveal the inside a bunker once reserved for Stalin himself.

An apparition of Virgin Mary in Herzegovina.

There's a mini version of Iguazu Falls hidden in the Balkans, and it's got a rope swing.

Latvia's symbolic mountain-shaped national library is home to millions of cultural tomes.

Medical museum that houses most notably the taxidermied remains of Vladimir Demikhov's famous two-headed dog experiment.

A preserved oak tree about 3,500 years old found in Riga, Latvia.

3,000 market stands in five former Zeppelin hangars.

A former Latvian headquarters of the brutal KGB secret police is now open as a grim reminder of their atrocities.

An eerie, derelict amusement park in Berlin.