Places positivelypossessed Wants to Go

This underground church is topped with a 500-foot cross that is seen by many as a beacon of fascist hubris.

A series of recreated fortifications mark George Orwell's path through the Spanish Civil War.

Hundreds of stone stairs and a winding medieval bridge connect this haunting Spanish island to the mainland.

Barcelona's historic 19th-century sewers, whose foundations were laid in medieval times, are open to the public for exploring.

Abandoned for decades, trains still pass through the now-restored remains of one of Madrid's first metro stations.

Bacteria and algae give the salty water its bubblegum hue.

A landscape decorated with enormous skull sculptures.

This Navarrese cave's history of witchcraft and pagan ritual is not just embraced, but recreated each year.

The morbid items in this small and hidden museum are not for the weak stomached.

A display of torture devices used in the Spanish Inquisition and other scourges of medieval Europe.

The lengthy skeleton of one of the tallest Spaniards of all time is on display in Madrid.

Mysterious face-like images that appeared within an Andalusian house are surrounded by legends of the paranormal.

Ancient paintings known as the "Sistine Chapel of Cave Art."

A 14th century bridge built as a fortress, where the devil lurks on one of its towers.

The only remaining collection of flayed figures made by French "madman" Honoré Fragonard.

This natural French spring has been turned into a magical grotto by Roman and medieval constructions.

Do these monsters look familiar? The gargoyles on this church are all from pop culture.

At Monet's beloved home you can still see the Japanese bridge, waterlilies, and weeping willows that were the subjects of some of his most iconic paintings.

The largest underground church in Europe.

An icy lake tucked among jaw-dropping alpine panoramas.

The mental institution where Van Gogh created some of his most famous work now allows guests to walk in the artist's footsteps.

This professional clown's home is an outsider art wonderland.

Sleep in a climate-controlled plastic bubble for the night.

The Cimetière des Chiens et Autres Animaux Domestiques is one of the oldest pet cemeteries in the world.