Mysterious rocks that ring musically when struck.

Where America's first doomsday cult awaited the end of the world.

The only geyser in the state of Pennsylvania is caused by pressure from an abandoned coal mine outside of the ghost town Centralia.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

An eerie, derelict amusement park in Berlin.

After a traumatic encounter with a six-foot eel, one Galway baker started making a daily loaf of sourdough in its shape.

The remains of a majestic house that was once stood in the crosshairs of the Irish Republican Army.

From golden eagles to peregrine falcons, this rehabilitation and education center is a haven for birds of prey.

The block of aged dairy is probably still edible after 2,300 years in a peat bog.

After being destroyed by IRA sympathizers, the ruins of this stately Irish manor have sat vacant for decades.

Once the longest bridge in Ireland, this rusting span sits abandoned and overrun by nature.

A moody and picturesque riverside ruin overgrown with vegetation.

Local legend says the remains of Father Christmas lie within the medieval grounds.

This permanent collection of preserved bodies taken from Irish bogs is one of the leading authorities on such morbid mummies.

The world of the ancient Celtic civilization explained through a bewitching 11 acre garden.

An eccentric garden of sculptures crafted in India decorate an Irish green space dedicated to Alan Turing.

This floating garden in the sky is straight out of a fairy tale, but the real thing is nothing short of magical.

This Irish show cave is said to have been the site of a Viking massacre that claimed 1,000 lives.

At the base of the Spring Mountains, a unique nursery packed with desert plants.

The ruins of an abandoned 18th-century town that is slowly being reclaimed by the forest.

Ruins of a historic medical facility sits eerily by the water.

A miniature village lies nearly forgotten in the forest by the side of a major highway.

The world's second largest single-dish radio telescope, once used to contact E.T.

A place to pay homage to Taíno heritage.