The excellent Swiss museum of witchcraft is led by a modern witch.

Extensive private collection of authentic Medieval devices used for human torture and execution.

Flowers have mysteriously appeared on her effigy every day for the last 150 years.

The prototype for all Nazi concentration camps.

These blingy, baubled skeletons lie in glass boxes inside a baroque Bavarian church.

Venice's "Island of the Mad."

The marble facade hides a little-known medical museum with early surgical instruments and rare copies of canonical texts.

This palatial spiral staircase was so unusual the name "snail" was given to the noble family who built it.

Those who own or stay at this 500-year-old, allegedly cursed house often meet terrible fates.

A Black Forest cuckoo clock theme park features one timepiece big enough to walk inside.

The private train station King Leopold II built for the Belgian royal family now lies abandoned.

This former Masonic lodge has been transformed into part museum, part bar, all awesome.

Inside this former medieval prison is a collection of objects designed to inflict unbelievable pain and suffering on the human body and mind.

Christ's blood allegedly preserved in a Belgian town.

The spectacular and eerie moss-covered grave site of 19th-century Belgian merchant.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

A Museum of Psychiatry in a still-operating mental institution.

A medieval cave used to shelter local hermits now holds nearly 200 old Quaker gravestones.

One of Bristol's best-hidden gems has ties to Lord Byron, whence it became the nation's first reformatory school for girls.

The alleged site of the months-long imprisonment of a Japanese prince.

A sign marks the location of an 18th-century sawmill allegedly owned by a wizard who employed Satanic imps.

A museum that chronicles the interesting and often dark history of the London docklands, once one of the major trading ports of the world.

A fully functional, 200-year-old remnant of the time when Brixton was mostly fields.

The collection contains over 25,000 items and details the painful dental practices of the past.