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

Palace where the nearly un-killable Rasputin was murdered.

An 18th century wonder of the world, lost in WWII, re-created at the Catherine Palace.

Museum celebrating the achievements of the Soviet space program.

Stunning examples of Russia's 18th-century wooden architecture.

Thirteen sculptures in central Moscow graphically depicting vices of the modern world.

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

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

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

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

A scale rocket of an Ariane 5 rocket serves as a monument to a pioneer of space science.

The castle where Martin Luther secretly translated the New Testament from Greek to German while in hiding.

Made from trees and then abandoned, this fence is still growing along a path in Germany.

This lurid German fountain plots the sad course of marriage from dating to death.

The last bastion of Roman presence north of the Alps looms over a German town.

Germany's Glienicke Bridge has a shady history of clandestine meetings, espionage, and spycraft.

A Nazi concentration camp and Anne Frank's place of death.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

Horrifically creative torture devices and shame punishments line the walls of this chilling museum.

The world's tallest church tower reveals a spectacular view to anyone up to the task of climbing the daunting staircase.

Executed in 1401, Exhumed in 1878, Stolen in 2010.

A strange rock formation with numerous legends trying to explain it.

A meteorite-bounded town in Bavaria.

After years of being casually peed on by humans, this tree is peeing back.