The oldest museum in Russia is home to a fascinating collection of nearly two million anthropological artifacts and anatomical curiosities.

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.

The European towns of Brașov and Râșnov each have proud signs reminiscent of the Hollywood sign.

Something's watching you.

This communist behemoth is the heaviest building in the world and a legacy of a brutal regime.

This snug medieval lane is one of the narrowest streets in the world.

A fire once nearly devoured this gorgeous 14th-century Gothic cathedral.

This elaborately decorated, fairytale-like Romanian royal palace is one of the most striking castles in Europe.

The possible imprisonment of Vlad the Impaler here earned the medieval castle its nickname, "Dracula's Castle."

Rebuilt several decades ago, its striking murals prevent it from being reconsecrated as a church.

"Holy Wisdom" overlooks the city that became its namesake.

A striking symbol of the Bulgarian capital.

This half-forgotten fortress was constructed by the Ottoman conqueror of Constantinople.

The alleged house of the Virgin Mary is tucked away in a park and nature preserve on Mt. Koressos in Turkey and is holy to both Catholics and Muslims alike.

A museum glorifying the life of Stalin, located in the city of his birth.

Fortified homes of highland warriors that are still in use today.

A small but hugely whimsical theater where marionettes play out the "The Battle of Stalingrad."

Unusual building appears to be haphazardly built from randomly piled bricks.

A cluster of historic bathhouses built on the famed hot springs that gave the Georgian capital its name.

Rock-hewn monastery complex with hundreds of cave structures tucked away into the mountainside.

The charmingly disheveled clock tower of Tbilisi's puppet theater.

Ancient rock-hewn town that witnessed key events of Georgian history.

Hundreds of intricately carved Armenian stone crosses can be found within this huge cemetery.