An intricately decorated tiny place of worship.

Underground hospital complex constructed by slave laborers during the German occupation of the Channel Islands.

Bloodstains can still be seen in this medieval church where two medics saved lives on D-Day.

The first island in the world designated a light-pollution-free astronomical observation point.

This natural crater along the coast of Jersey may take its name from the devil statues who have watched over it.

Medieval Danse Macabre Fresco in Northern Brittany.

An abandoned beach resort in Normandy reclaimed by artists.

Europe's largest community of crocodiles and alligators.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

Folklore and history carved into Brittany's coast.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

Ancient catacombs form the foundation for this Rococo orgy of a church.

Hidden in an Italian forest is a completely homemade amusement park that has taken a lifetime to create.

A whimsical art tower at a Bavarian brewery includes a grotto for its mythical beer-brewing dwarves.

A tiny rural community in Switzerland was home to one of history's most shocking murders, and led to the banning of Absinthe for nearly a century.

Originally envisioned by King Ludwig II to rival Versailles, Herrenchiemsee's "New Palace" remains half-gilded for lack of funds.

This Nazi-built amphitheater was constructed on a sacred mountain site used by various German cults.

The jaw of one of humankind's earliest ancestors on display at an overlooked geology museum.

It's good luck to be mocked by this monkey.

A preserved college lock-up that recalls a clubhouse approach to discipline.

Sitting in the basement of a castle, the largest wine barrel in the world is bigger than most apartments.

A collection of artworks exclusively created by the mentally ill that was almost burned by Nazi culture police.

This military mausoleum captures the solemn grandeur that most memorials only aspire to.

Crumbling ruins of the thermal baths that once attracted royals and aristocrats from throughout Europe.