This spooky statue sits outside a famous Prague theater.

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

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

A surreal statue honoring Prague's favorite literary son.

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

An existential riddle in the world's largest ancient castle.

A turn of the century building boasting some of the most beautiful art nouveau architecture in Prague.

A magnificent waterfall nestled in the heart of the El Yunque National Forest.

Legend tells how a Spanish soldier disappeared from this isolated sentry box without a trace.

This bleach-white graveyard overlooking the ocean is accessed through a tunnel.

Enormous statue of the Emperor of the Mongols.

This bazaar is one of the oldest in the Arabian world.

This museum housed in a former brothel explores the past and present of sex work in Amsterdam.

Amsterdam's Red Light District leaves little to the imagination.

A public urinal so pretty, it was declared a national monument.

A Dutch passageway's artistic, aquatic-themed makeover pays tribute to the capital city's famed waterways.

An ancient passage filled with stalls selling used books, once frequented by Vincent Van Gogh.

Museum preserving torture methods from the past.

This tourist village in Nairobi celebrates the traditional lifestyles and customs of Kenyan tribes.

The farmhouse owned by the Danish author who wrote "Out of Africa" is now a museum honoring her legacy.

Get tall with nature's lankiest beasts and their warthog friends at this Kenyan preserve.

Located in Nairobi National Park, this animal orphanage is the oldest of its kind in Kenya.

A preposterously luxurious hotel with gold-plated iPads, Rolls Royce chauffeurs, and a staff that trains by watching "Downton Abbey."

On any given day this sprawling market houses literally tons of government-regulated gold, gems, and precious metals.