This historic covered bridge contains a series of macabre paintings that communicate one thing: everyone dies.

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

This ossuary is more than five centuries old and is heralded as one of the finest in Switzerland.

The largest underground lake in Europe.

Climb this overlooked gem's spiral staircase and you'll be rewarded with spectacular views of Glasgow.

"Respectful to the dead, safe and sanitary to the living, dedicated to the Genius of Memory..."

Hunt for buried treasure in Nova Scotia.

Iconic rock formations that allow for exploration during high or low tide.

Explore the ruins of war and maritime history along this gorgeously ferocious North Atlantic seascape.

This Canadian island is a veritable garden of decay with countless abandoned structures dotting the landscape.

The history of occult science is turned into a creepshow at this lurid Prague tourist attraction.

Two mammoth statues inspired by equally tall tales lure tourists to this roadside attraction.

The ghost town that ended up on Ebay.

The gloomy ruins that inspired Bram Stoker to bring Dracula to life.

A lovingly curated curio shop in which the taxidermy wear newspaper party hats, and peanut shells are spread across every surface.

A Belgian self-built tower inspired by the Bible and ancient civilizations.

One of the largest caves in the world open to the public.

An alchemist's "magic door" stands in the middle of a Roman park.

A fairy tale castle in modern Rome.

A small island less than half a mile from Venice is a forbidden island with a dark and twisted past.

A 16th-century horror show built in a lovely Italian garden.

Gigantic mosaic sculptures of the figures on Tarot cards fill this colorful Tuscan garden.

Renaissance villa and gardens complete with a tormented colossus.

Ruins of a Carnegie family mansion on Cumberland Island.