The striking jade death mask of an ancient Maya king is displayed in a replica tomb in Mexico City.

Amazing collection of folly buildings in Cobham, Surrey.

This 15th-century fortification was built to defend bunnies.

This surreal art house looks like a geometric version of a small chapel.

A hill carving of the legendary dragon that terrorized the village of Bures in the Middle Ages.

The world's oldest model village.

17th-century tradition of public weighing is met with boos or cheers depending on the Mayor's weight.

This unusual geoglyph was built as a warning so low-flying aircraft wouldn't scare the zoo animals.

Model aircraft soar over 360-degree views of the countryside at the start of England's oldest road.

This beautiful Victorian ironwork masterpiece was built to keep London from smelling like poop.

Luxurious hotel designed to stir the imagination of its many visitors.

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

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

This skewed English house has looked like it's going to fall over for centuries.

Geodesic dome luxury retreat in the Scottish Highlands.

The first tunnel to be dug beneath a river, repurposed as an art and museum space.

One family's environment-friendly hobbit-house in Wales.

The ruins of this medieval castle in Northern Ireland have inspired artists from C.S. Lewis to Led Zeppelin.

The taxidermy remains of the first mammal ever cloned from an adult cell are on display in Edinburgh.

This tiny little pool is said to be home to a malicious mermaid named Jenny Greenteeth.

19th century museum with an eclectic mix of curiosities, from Egyptian artifacts to items on archery history to the skull of the world's oldest horse.

Legend says this cave housed a 16th-century cannibal and his family of 48.

A midnight snack that lights up the night.

The remains of a grand castle that may have inspired Bram Stoker's Dracula.