A scientific repository of goiters, boils and other ailments throughout Mexican history.

The jewel of western Mexico's archaeological legacy is this tiered circular pyramid now covered in grass.

This historic cemetery built for victims of the epidemics that swept Guadalajara is shrouded in macabre tales.

12,000 sq. ft. museum tracing erotic art from antiquity to modern times.

Neglected resting place of some of the city's early luminaries—and a woman encased in concrete.

An abandoned water sports stadium that has become a haven for graffiti and decay.

Former villa and estate of James Deering developed to preserve native tropical forests.

One of the world's oldest universities houses an incredible collection of anatomical models, mummified body parts, and human bones.

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

A whimsical brother of the nearby Fallen Angel statue takes the falling part quite literally.

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

High Victorian fantasy created a fairytale castle out of a ruined fortress in Wales.

Stroll through Welsh history in a village of reconstructed structures.

Skeletons, medical artifacts, and other obscure and precious treasures all displayed in a wooden pharmacist's cabinet.

Dedicated to the art of hunting, with juxtapositions of contemporary art.

A unrivaled and rather horrifying collection of wax dermatological models.

Paris' fabled purveyor of exotic taxidermy and natural history curios.

This museum houses an imposing skeleton army comprised of creatures great and small.

Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.

Behind the pink curtain, Au Bonheur du Jour, an art gallery of erotic archives.

A haunting collection of the vanished and disappearing natural world.

One of the oldest medical collections in Europe focusing on rare surgical instruments.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

This massive library holds what was once the largest book collection in the world.