A 'living museum' in Leiden, the oldest of its kind in the Netherlands.

Twisted buildings adorn the banks of the Rhine river.

This futuristic German television spire is actually the world's largest digital clock.

A cluttered and astounding collection of antiquities and curiosities.

Christ's blood preserved in a Belgian town.

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

This giant urban staircase was built to keep the city's brave fighting men from getting waylaid in the red light district.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

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

Cold war icon and onetime "hole" in the iron curtain.

One man's personal kunstkammer, museum and shop.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

A castle from the Holy Roman Empire that hosts traveling youth... in its stables.

This lurid German fountain plots the sad course of marriage from dating to death.

A 26-foot shark sculpture—a statement about bombs—set off a municipal battle royale.

Ancient Egyptian wigs, South American feather headdresses, a bounty of anthropological artifacts in Oxford.

One of Europe's oldest libraries.

Used as an example in one of the first dictionary entries for "museum" in 1706.

A theatre built to house the rowdy Oxford graduation ceremonies became the stage for a debate about God's existence.

A little sculpture with a large wardrobe.

Tucked in the back of this amazing antique store is an important piece of medical history.

The largest and most famous wax anatomical collection anywhere in the world.

The curios of pharmacist and collector Henry Wellcome.

This exemplar of modernist architecture is meant to captivate and inspire students of the Cooper Union.