The largest known meteorite on Earth was too big to move.

This "dead marsh" sits among the largest sand dunes in the world, a forest frozen in time.

Unexplained bald patches in the landscape grow and recede over time, as though they are somehow alive.

Bizarre living fossil only grows in a small chunk of the Namib Desert.

This secret coastal village is studded with pastel-colored houses all piled on top of one another.

Where commuters walk through remnants of an ancient Greek necropolis.

Cave on extinct volcano, once home to famous mathematician Pythagoras.

Dublin's "Dead Zoo" serves as a window to Victorian museum design.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

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

This grave resides at the crossroad of three parishes.

Quirky Welsh observatory unites art and science.

19th century museum with an eclectic mix of curiosities, from Egyptian artifacts to items on archery history to the skull of the world's oldest horse.

Cemetery established by the Victorians as a solution to the overflowing graveyards.

Long-secret natural history museum, featuring the skull of a "Terror Bird."

Seat of the Duke and Duchess of Devonshire for centuries.

A harem-inspired Moorish fantasy design in a Victorian-era Welsh castle.

A taxus-tree to which Julius Caesar reputedly tied his horse.

Fascinating town where normal life interfaces with the occult.

Museum about life, death, and cannibalism in the Stone Age.

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

Famously misunderstood wonder of the ancient world

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

A 550-square-meter micro-nation off the coast of Britain.