The bears may be gone, but their old cages can still be found.

This Boston medical museum features the skull of the famous medical case of Phineas Gage.

Trash escaped from a landfill to fill beaches with all kinds of treasure.

This cemetery served as the only official burial grounds in Cambridge for nearly 200 years.

Impossibly life-like natural history models created out of glass by a father and son.

Three prestigious academic collections come together to create a world-class natural history museum.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

A morbid secret lies hidden within the beautiful walls of the Boston Athenaeum.

19th-century operating theatre in which the use of ether was first demonstrated - plus, a skeleton and a mummy!

This historic graveyard monument is dedicated to a tragic victim of witch trial hysteria.

This abandoned subway station can still be seen on regular commuter trips.

This empty Detroit high school was too expensive to maintain or destroy.

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

The patron saint of spinsters grasps a container of dried blood.

Once a private collection, now the only museum of arms and armor in the Western Hemisphere - CLOSED.

One man's personal kunstkammer, museum and shop.

From buck blood to Theriak miracle tonic, this collection of Renaissance chemist's gear look's like a wizard's pantry.

Renaissance hospital featuring a rotating door into which unwanted babies were dropped.

The remains of a failed attempt at medieval nerdery are hidden deep in the woods of Virginia.