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

Largest lake in Great Britain measured by surface area.

A petite castle folly in the English countryside.

The stately remains of Llywelyn the Great's mighty fortress.

The atmospheric road was never meant to be so creepy.

Northern Ireland's Brobdingnagian stepping stones.

Commonly referred to as the most photographed Victorian home in the United States.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

This ultra-modern California span is actually a titanic solar clock in disguise built by famed architect Santiago Calatrava.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

A smoke stack so large, the Washington Monument could fit inside!

The narrowest street in Canada was once a spot for dastardly doings, now a historic piece of Chinatown.

This historic Victorian hotel has a scandalous history of affairs and murder.

A famous hotel houses an impression collection of mini dioramas and giant doll houses.

100-year-old shipwreck you can walk up to at low tide.

A Roman-style column in Oregon hides a spiral staircase inside.

One small town in the Pacific Northwest transformed itself into a Bavarian-themed tourist destination.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

This turn of the century masterpiece has a mysterious goaty interloper.

The largest stone circle in the world has ended up bringing up more questions than it has answered.

Famously misunderstood wonder of the ancient world

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

The yawning maw of this pagan visage is said to bite off the hands of liars.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.