All that remains of the medieval palace of the famous "Black Prince."

An incredibly well-preserved piece of ninth-century Viking poop.

Enormous terracotta heads of Queen Elizabeth and Prince Phillip can be seen on the side of the road to Windsor.

The site of a mysterious pony massacre is rich with extraterrestrial conspiracy theories.

This allegedly haunted 16th-century tower house-turned-museum exhibits thousands of spectacular objects.

In an isolated field near a dilapidated barn stands this chilling portrayal of the plight of the Nuba peoples of Sudan.

The bizarre headgear looks like it was made for a fool, not a king.

A baffling beast so absurd a town councilman called it "intellectual vomit in technicolor."

A bay of elaborate, historic toilets are held in high esteem at this Scottish dock.

The fierce beast perches atop a pedestal marking where the historic City of London gates once stood.

An archive of ceramic eggs painted to record clowns' personal makeup designs.

The last resting place of the famous Native American princess is marked by a haunting monument.

A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.

Once a farm where patients tilled the soil, this asylum lost its workforce when overmedicating became common practice.

This enchanting Victorian estate was home to the world's first hydroelectric power generator.

This small museum in a 17th-century building honors three iconic Scottish writers.

Part museum, part piece of Arthurian-inspired history, this stately hall attracts King Arthur fans from miles away.

A mysterious crater-like pond has a spooky tendency to empty and fill with complete disregard to rainfall patterns.

Unusual British home built to disguise a water tower.

A mysterious bridge over a sunken Roman road.

Asthmatic Charles Hyett's son built a fantastical garden for his father to convalesce in, alas it was too late.

This former abandoned hospital, a complex of stunning 19th century buildings, once housed 2,000 psychiatric patients.

This ornate English estates "Prodigy House" still bears the cannonball marks of civil war.

This Cheshire museum has cuckoo clocks, a rare pipe organ and vintage motorbikes. But mostly cuckoo clocks.