The bizarre visions of H.R. Giger, tucked away in a Swiss medieval city.

150-year-old satirical tableaus made from stuffed frogs.

A symbol of friendship between the mountainous regions of Switzerland and Bhutan.

A striking 12th-century-style castle built on the edge of a cliff.

This ossuary is more than five centuries old and is heralded as one of the finest in Switzerland.

The atomic museum in the basement of this German castle displays long strands of replica uranium cubes.

Video games, body language, and postal history are all on display in this Swiss museum.

This small museum displays a collection of outsider art and scale models of past "treatments" for mental illness.

The alpine falls where Sherlock Holmes apparently met his demise can actually be visited.

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

This museum tells the story of lake dwellers from 4000 BC to 850 BC, replete with stilt houses and goats.

Created by a pair of artists, this former hotel was designed to provide a minimum of everything including comfort.

A unique collection of Swiss art brut and naïve art displayed in an old warehouse.

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

The last woman executed for witchcraft in Europe is remembered in this Swiss museum.

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

These spooky and unusual stone formations create an underworldly landscape.

Its collection commemorates the author of the iconic children's book "Heidi."

Zurich's evolution museum hosts a unique collection of skeletons among its natural history treasures.

Museum dedicated to wax representations of disfiguring diseases.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

This museum is home to a sugar sculpture of the Berlin Airlift Memorial.

Reminders of the Battle of Berlin still scar the railway.

A museum in the building where Nazi Germany signed its surrender tells the story of World War II from the Soviet perspective.