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

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

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

Now nearly dry, this lake is said to be the ancient home of the Lady of the Lake, and was once thought to be bottomless.

Hundreds of prehistoric stones, arranged in perfect lines in a French field.

This sword isn't waiting for a king to pull it out. It was placed there by a saint.

Fascinating town where normal life interfaces with the occult.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

Museum preserving torture methods from the past.

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

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

Known as the "Dodo Manège," this carousel features a herd of animals that have disappeared—or may be gone soon.

Memorial of the Salem witchcraft hysteria in the town of Danvers, where it all began.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

The gloomy ruins that inspired Bram Stoker to bring Dracula to life.

The legendary cliffside castle of three-time Voivode of Wallachia, Vlad the Impaler.

The largest stone moai on Rapa Nui.

Europe's largest prehistoric mound – burial site of a legendary king?

Famously misunderstood wonder of the ancient world

The blood-soaked ruins of the castle where the murderous Blood Countess was walled in alive.

This house was largely built out of hundreds of thousands of discarded glass embalming fluid bottles.