This iconic 1,000-year-old medieval castle is a favorite of the film industry, most notably as the location for Hogwarts in Harry Potter.

The true age of this ancient stone circle is unknown, but its stunning vista isn't in question.

A rocky sea serpent hides caves, blowholes, and a spectacular natural bridge.

A subterranean playground in an abandoned slate mine.

Abstract dinosaur models in London.

Hidden in a grotto 26 feet below Nottingham's oldest hotel, this stylish subterranean drinking den is notoriously hard to find.

The elaborate clockwork contraptions in this Scottish gallery create small worlds of whimsy and horror.

A toy store with a century-long history preserves the craftsmanship of playthings of the past.

A metal tree emits eerie, melodic notes on top of Lancashire's Crown Point.

Mysteriously stacked storefront paths give this medieval British town an iconic style like none other.

The largest greenhouse in the world is home to over one million types of plants.

A unique waterfall that some believe attracts the fairfolk.

The beloved fantasy novelist is buried near a church containing a whimsical etched glass window full of Narnia favorites.

This memorial to World War II's fallen airmen shows us the movements of the stars that once guided them.

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

The site of the climactic scene from the classic horror film is now a historic landmark.

The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.

A fortified city, home to a remaining population of five families

A black and white solution to the Bolivian city's traffic problems.

Bolivia's needle-like rock formations.

Death road of Bolivia.

This red lake 4,000 meters above sea level is home to rare flamingos.

Largest site of dinosaur footprints ever found includes more than 5,000 tracks.

A valley of unique erosion patterns lends to a view like nothing on Earth.