A church of bones, decorated with 40,000 human skeletons.

A museum of alchemy and a basement laboratory all housed in an ancient building in a Gothic tower.

The first museum in the world devoted to sexual gadgetry.

The hidden lair of an alchemist rediscovered in a 2002 flood.

Macabre astrological automaton clock dating to the late 1400s.

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

A snapshot of the city's fascinating voodoo culture.

This hidden rooftop garden in downtown London offers a quiet respite from a bustling city.

A much-loved local landmark pays tribute to the shipbuilding past of this area.

The bones of two medieval royal lions were discovered at the historic fortress.

Legend says these colorful, invasive residents are the descendants of birds released by Jimi Hendrix.

These wire animal sculptures commemorate the exotic inhabitants that once called the Tower of London home.

A historic hill of tall tales, with one rather special tree.

These docile dragons are ideal inhabitants for the conservatory greenhouses.

The ritual has been performed uninterrupted for nearly 700 years.

Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

A community of artists and entrepreneurs seeks a simpler life on London's waterways.

A domino effect created with Britain’s iconic telephone boxes.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

A Victorian natural history and ethnographic museum with wonderful turn-of-the-century, science-book-esque evolution displays.

In this cobwebbed old operating theater, you can practically hear the screams of the unanesthetized patients.

The anatomical-pathological collection of a man who changed surgery.

Catacombs turned marketplace.