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

To literally keep their waste out of their own backyards, the citizens of this English city built an impressive sewer system that is still in use today.

Twelve plaster figures inspired by da Vinci's famed painting haunt the desert landscape above a real-life ghost town.

A hundred copies of Antony Gormley's naked body stare out across the water.

The elaborate clockwork contraptions in this Scottish gallery create small worlds of whimsy and horror.

A 30-acre garden inspired by the principles of modern physics.

Everyone and everything one man ever loved and lost, now stare into the East for all eternity.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

The largest underground church in Europe.

The macabre collection of Jacques Sirgent, an expert scholar on the undead and all of their trappings.

A mysterious artist-run cabinet of curiosities and library.

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