A neighborhood church's unusual abstract stained glass was the final project of avant-garde artist Jean Cocteau.

A unique underground structure dating back to the 1st century BC.

A private garden of sculptural eccentricities.

The Swiss artist's bulbous and overgrown shape-shifting sculpture controversially graces the center of Bern.

Walk through living pictures and music in the Cathedral of Images.

This building’s ghostly exterior reflects its former lives as a prison, school, and funeral home.

This striking fort on the Maginot Line looks just as it did after being destroyed in the Fall of France.

The remains of 40,000 humans, meticulously stacked in a tiny churchyard shed.

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

The remains of this castle, known as the Witch’s Eye, watch over the Thur Valley.

Science fiction's grandfather has a fittingly marvelous tomb.

This collection of French root art looks like an indoor fairy wonderland.

This small commune with an even smaller name appears to have an unlikely amount of dead ancestors.

The bizarre visions of H.R. Giger, tucked away in a Swiss medieval city.

An art-filled botanical garden and former dyeworks hiding in plain sight.

An icy lake tucked among jaw-dropping alpine panoramas.

Personal garden filled with mosaics made of recycled garbage.

A Swiss board game museum housed inside a picture-perfect castle.

This lovely little bridge hidden in a Switzerland gorge is essentially a fairytale.

This fascinating abbey is considered the oldest monastery in the region.

An aluminum skeleton brings Chinese mythology to the French shore.

The lost Latin words were reconstructed using the holes from the nails that once pinned them in place.

This long line of cement defensive wedges is named after the famous chocolate bar for obvious reasons.

This ancient Roman bridge and aqueduct still stands as a wonder of classical construction.