This demon atop the Notre-Dame de Paris looks utterly bored.

Claude Monet was baptized in this lavishly ornate Paris church.

The narrowest street in Paris.

This bridge was constructed from the rubble of the infamous Bastille.

A popular shrine where the Blessed Virgin allegedly appeared in 1830, displaying a holy armchair and two incorruptible remains of Lady Saints.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

An abandoned train station in Munich constructed for the 1972 Olympic games.

A graveyard and memorial chapel for victims of leprosy.

This small Bavarian graveyard is filled with empty graves for German soldiers lost during the World Wars.

Every hour the doors open to reenact the legend of the heroic mayor who saved his town by drinking a gallon of wine.

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

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

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

Striking occult iconography on a medieval German church.

Dress up like a miner and take a slide into the disco-lit depths of this once foundational salt mine.

In this truly magical place, rent hasn't been raised since the year 1520.

A Black Forest cuckoo clock theme park features one timepiece big enough to walk inside.

These bronze pamphlets remember a remarkable group of Germans who fearlessly opposed the Nazis in the very center of their power.

The prototype for all Nazi concentration camps.

A small but immensely extravagant palace built by the "Night King."

Soaring over 6,000 feet in the Bavarian Alps, this beer garden was once Hitler's 50th birthday present.

The fairy tale castle of the “fairy-tale king,” this was also the inspiration for Disney’s “Sleeping Beauty.”

Two nations form a rare four-sided border at the peak of a mountain, philosophical questions result.

Hot springs monkey spa in the middle of Hell's Valley.