According to this bar, God gave an “11th commandment” to Antwerp: Thou shalt drink beer.

Rare wooden escalators lead deep down into an otherwise staggeringly monotonous tiled tunnel.

The burial place of an obscure North African saint was turned into a macabre body preservation factory for the 17th-century Neapolitan elite.

In Twickenham sits a small whitewashed castle that inspired Mary Shelley's 'Frankenstein.'

The anatomical-pathological collection of a man who changed surgery.

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

This museum inside Amsterdam's largest cemetery explores how people deal with death.

A poignant museum dedicated to the history of the Dutch resistance against Nazi occupation

The relics of dozens of martyrs are stored in a single chapel.

This small town in the Netherlands has no roads but instead, miles of canals and over 100 bridges.

Preserving the research tools, unexpected inventions, and odd collections of generations of college professors.

Home to 10,000 medical specimens including the remains of Rudolf Virchow's extensive collection of pathological specimens.

Medical museum that houses most notably the taxidermied remains of Vladimir Demikhov's famous two-headed dog experiment.

The oldest continuously operating pharmacy in Europe.

Go inside a revolutionary, cage-less zoo where 35 species live and some of them roam free alongside their human visitors.

Unchanged for centuries, this medieval library keeps its books in chains.

The cutest way to stay safe in traffic.

Unsurprisingly, Holland is home to one of the most magnificent flower gardens in the world.

The Bloemen Route, or “Flower Route”, stretches 25 miles through prime Dutch tulip country as a result of “tulip mania,” the world’s first economic bubble.

This centuries-old gothic monster has been converted into a sprawling, glossy bookstore.

A gift from Emperor Franz Joseph I to his wife.

A set of outdoor stairs named in honor of a famous Austrian artist.

This beautifully preserved Ottoman house is steeped in history.

Sitting on an Italian hilltop is this surreal fortress built by the mad inventor of electrohomeopathy.