Eighty million natural history specimens call this gargantuan museum home.

Scattered throughout London are ancient remnants of the city's former bounding wall.

A historic house left in "dramatic still life."

The largest clown school in Britain offering accredited degrees.

Artists and musicians now rule over this former rail station.

Banksy gives themself artistic license with this piece of London street art.

The only university zoological museum in London houses extinct animals, bizarre natural history specimens, and a Micrarium of microscopic creatures.

Museum dedicated to the UK's first charity for abandoned children, with keepsakes of the mothers who left them behind.

Since 1874, this macabre collection has developed into a museum devoted to Scotland Yard's mementos of dastardly deeds.

An incarceration museum on the spot of possibly the oldest prison in England.

In this cobwebbed old operating theater, you can practically hear the screams of the unanesthetized patients.

Ship-sized kinetic sculptural fantasy.

This one has sailed five times as far as Sir Francis Drake's famous ship.

A hands-off space for graffiti artists to hone and display their skills.

Children's hospital in London that operates on royalties received from Peter Pan, which J.M. Barrie signed over in 1929.

From Ancient Rome to WWII, Neupfarrplatz has over 2,000 years of history underneath its main square.

"The most colorful grottoes of the world.

One of the best collections of wax anatomical models in the world.

The former private quarters and office of Dr. Sigmund Freud now hosts a museum housing the works of the founding father of psychoanalysis.

A small museum filled with over 1,000 clocks, and one particular clock calibrated to run until the year 9999.

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

The largest toy museum in Poland showcases Europe's history of childhood.

When the rain falls, this drain system turns into a musical instrument.

Over 12,000 hygiene oriented objects and exhibits.