The largest cave chamber in Britain—big enough to fit a whole cathedral inside.

Created hundreds of years ago, the magical follies and landscapes at this park were almost lost to time before being restored.

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

Gardens representing parts of Asia, Europe, and the Mid East are tucked away among the Soviet-style buildings in East Berlin.

A wunderkammer of mysterious objects and stories.

Started as a kitchen garden, now the second largest botanical garden in the world.

Established in 1638 to battle the Black Death, Hortus Botanicus Amsterdam is a treasure trove of rare flora.

The worst flood disaster in Welsh history might have been a lot worse if it had not happened on movie night.

An amazing collection of curiosities hidden in a small Welsh village.

The artist David Nash planted a circle of trees in 1977.

The world's largest prehistoric copper mine had 30,000 animal bones scattered throughout the maze of passageways.

In this cobwebbed old operating theater, you can practically hear the screams of the unanesthetized patients.

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

This shop and gallery is a modern-day cabinet of curiosities, unassumingly positioned along an urban thoroughfare.

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

A kaleidoscopic warehouse-maze of handmade neon signs.

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