The John Snow Memorial marks the epicenter of London's 1854 cholera epidemic.

The church is gone, but the graves and legends remain.

Where Aleister Crowley attempted to seize the Hermetic Order of the Golden Dawn in a mask and a kilt.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

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

This impressive collection of rare books on ancient mysticism inspired author Dan Brown.

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

The history and future of cannabis.

This gorgeous reading room houses the oldest and largest art history library in the Netherlands.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

The Tudor-style cottage in the middle of the square is not quite what it seems.

The London statue that imitates passersby.

The last remaining example of the boatmen's perches that once dotted the south bank of the Thames.

Spitalfields' regal market goat is said to be a monument to the area's migrant population but most are pretty sure it's just a goat.

Public access to clean drinking water was an instant hit among the masses.

A toy store with a century-long history preserves the craftsmanship of playthings of the past.

A 2000-year-old Roman amphitheater lies just below Guildhall Yard.

A makeshift shrine to the late rock star is still kept up on the nondescript façade outside 1 Logan Place.

Rebuilt remains of a temple to Roman god Mithras.

A student driver's nightmare.

The oldest standing Byzantine church in Athens is tucked within a monastery in the middle of an upscale shopping district.

A sharp sculpture made of thousands of pieces of jagged glass.

Eighty million natural history specimens call this gargantuan museum home.

A famous burial ground with a history both grim and literary.