A Mayan village preserved for centuries in volcanic ash.

A full-size replica of this well-preserved temple lets you take a walk through the Mayan age.

This three-chambered cave is the only protected natural bat hibernaculum in Quebec.

Mexico's astounding mummy museum with "the world's smallest mummy."

Thousands of well-dressed mummies below a monastery.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

This historic "City of the Dead" lies prominently in the center of New Orleans' famous Garden District.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

The loneliest island in New York.

The oldest of Venice's plague quarantine stations, designed to keep the medieval city safe from disease.

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

Venice's "Island of the Mad."

One of the world's largest collections of pharmaceutical artifacts.

An ambiguous ambience emanates from this centuries old leprosy quarantine.

Home to 10,000 medical specimens including the remains of Rudolf Virchow's extensive collection of pathological specimens.

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

Medical history with an amazing, if frighting, collection of wax diseases on display.

A unrivaled and rather horrifying collection of wax dermatological models.

America's first public mental health facility.

South Carolina's last remaining slavery auction house is now a museum devoted to its own tragic history.