The ruins of this gorgeous clifftop castle look like something from a fantasy novel.

Giant naked man on a hillside.

Famously misunderstood wonder of the ancient world

This bridge is the first to be made entirely from iron, but designed like it was still made of wood.

An intriguing three-sided folly is a testament to one man's devotion to Catholicism and the number three.

A complicated contraption for telling time by the moon.

Birthplace of the "Cat in the Cradle" and a cluster of iconic, original windmills that let the Dutch tame the seas.

These slanted cubic abodes are a creative if odd solution to a zoning pickle.

One of England's most famous churches hides a pair of little known architectural treasures.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

A midnight snack that lights up the night.

A fantastic castle rumored to be the birthplace of King Arthur.

These picturesque ruins crumble beautifully into the ocean.

A island reachable by a causeway at low tide is possibly one of the earliest Western European locations to be identified in text.

The Stonehenge of Wales is one of the grandest neolithic dolmens still in existence.

This bridge made famous in a novel and on-screen wasn't actually built over the river Kwai.

A white Buddhist temple with a golden restroom.

A battle between nature and architecture in the Cambodian jungle.

Home of the "true" equator.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

The stones of this Incan wall complex fit together so well you couldn't fit a piece of paper between some of them.

Preserved Inca city and site of the last Inca stronghold against the Spanish conquistadors.

The ancient tomb acts as a calendar that keeps perfect time.