A nearly unconquerable island-fort in the Indian Ocean.

Local legends say that fairies used to dance in the moonlight here and invite handsome young men into their grottoes.

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

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

This crumbling folly looks like an enchanted left over from Middle Earth.

This fantastical and eclectic English garden takes its inspiration from Egypt, China, the occult and more.

The hidden "ballroom" under a mansion lake was built by a criminal who ate a cyanide pill during his trial.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

The sign at the garden gate reads: "These Plants Can Kill."

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

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

The forest that inspired Winnie-the-Pooh's Hundred Acre Wood can be found outside London.

This Gothic Revival castle used as a shooting location for "The Secret Garden" and other films.

Once thought to be the mysterious work of a witchy prophetess, a well with unusual properties turns objects into "stone".

A peace symbol in Northern Ireland is among the world's largest hedge mazes.

The atmospheric road was never meant to be so creepy.

This Irish show cave is said to have been the site of a Viking massacre that claimed 1,000 lives.

This burial pyramid in central Ireland is thousands of miles and thousands of years away from its Egyptian inspiration.

The strange behavior of a tween led to allegations of witchcraft and a curse being placed on anybody within earshot.

Overlooking a Scottish loch, this beautifully crumbling castle once inspired a poem by William Wordsworth.

This castle was established by the 4th Duke of Montrose and is connected to the Buchanan Clan.

A mysterious monument where a woman who records say never existed was burnt alive for being a witch.