Catacombs turned marketplace.

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

This shop and gallery is a modern-day cabinet of curiosities, unassumingly positioned along an urban thoroughfare.

A historic arboretum and non-conformist, non-denominational park cemetery.

The sixth of London's "Magnificent Seven" cemeteries, and a source of unlikely inspiration to Beatrix Potter.

This series of underground chambers contains Europe's largest subterranean lake that is slowly drained each day.

The fairy tale castle of the "fairy-tale king."

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

Macabre astrological automaton clock dating to the late 1400s.

The first museum in the world devoted to sexual gadgetry.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

Venice's island of the dead.

This semi-secret storybook hedge maze is also the oldest garden in the city.

Mountain where Jesus was first tempted by the Devil.

The remains of an encyclopedic sculpture garden later used as an internment camp.

The oldest Roman lighthouse still in use.

Giant granite sculptures representing family on the northern coast of Spain.

An accidental trick of light casts the perfect shadow of a pilgrim of the Camino de Santiago against the cathedral wall.

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

Elaborate tile work in this railway station tells the story of Portugal.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

Devastated landscape used for hundreds of years by the Romans as their primary mining site.