A 6th-century stone lies at the site of the mythical battle waged between King Arthur and his nemesis Mordred.

A unique waterfall that some believe attracts the fairfolk.

These mysterious mazes carved on the rock may be up to 4,000 years old.

It is said the legendary wizard once lived in this sea cave beneath Tintagel Castle.

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

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

A whimsical cottage from the 1300s with a preserved Victorian-era post office inside.

This remote castle was built to be a wealthy businessman's palace of vice but is now simply a historic vacation cottage.

Lines from a walking song are etched into a rock in Natural Bridge State Park.

The fountain marks the area where hundreds of accused witches were burned at the stake.

This cannonball embedded in the side of an Edinburgh house once served a surprisingly pedestrian purpose.

This extinct volcano rises above Edinburgh and is special for its panoramic views over the city.

This tiny little island has, as the name says, just enough room for its single house.

An open-air museum in a mountain valley features works designed to blend in with—and disintegrate back into—their natural surroundings.

Along a California highway is a kind of Jurassic Park made of metal.

Three acres of mythology-inspired sculptures are visible from the highway.

This churchyard arbor is surrounded by hundreds of gravestones placed there by author Thomas Hardy.

According to legend, King Arthur killed a beast that dwelled beneath the waters of this Welsh lake.

The body of an unidentified woman, visible through a glass coffin, was discovered by accident.

The atmospheric road was never meant to be so creepy.

No one knows who created the statues or if they are arranged properly—let alone the artwork's real name.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

Thousands of well-dressed mummies below a monastery.

Visit the ancient, mysterious Roman catacombs ... in the Netherlands.