This stone was once used by druids to determine a person's innocence or guilt.

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

The superstar of Cold War nuclear bunkers has been featured in countless films but is now barely operational.

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

A musical composition 1000 years in length plays at the Trinity Buoy Wharf in London.

An automaton perched above an classic clock and watch store

The "Mona Lisa" of funerary art.

An unassuming churchyard is the resting place of a pioneering surveyor and reluctant namesake of a mountain.

This large, circular tomb is the final resting place of the first emperor of Rome.

135 bronze medallions mark a French meridian line which once rivaled the hotshot Greenwich timeline.

The randomness of this wall of lava lamps helps encrypt up to 10 percent of the internet.

Mysterious meeting place for UFO hunters near Area 51.

A Swiss amusement park entirely dedicated to the theory of ancient astronauts.

During this Shetland Islands celebration, hundreds of torch-carrying "guizers" lead a procession to burn a viking longboat.

This Shetland Islands bus shelter may be small, but it squeezes in a couch, a desk, some art, and even an old telly.

An Italian restaurant became a rock-and-roll hangout and the lair of the "Hollywood vampires."

Monty Python fans will recognize this abandoned mine as the Cave of the Killer Rabbit of Caerbannog.

The granddaddy of English geoglyphs dates back to the late Bronze Age.

This astronomical clock is the second oldest in England.

This century-old cinema is complete with musical interludes and boasts a rare projection system.

Preserved Inca city and site of the last Inca stronghold against the Spanish conquistadors.

An unfinished tomb carved into a giant boulder in the Arabian Desert.

The commemorative stone column conceals a secret laboratory.

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.