This beach runway is off limits during high tide.

A stone wall that mysteriously moved three feet from its foundation.

A rocky Irish outcropping with a history of wealth, conflict, and ruin.

One of the most popular megalithic sites in Ireland stands as a humbler version of Stonehenge.

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

Behemoth, cannon-like telescope operated by generations of Irish earls.

The oldest pub in Ireland may also be the oldest surviving bar in the entire world.

A retired military stronghold on the rolling green coast of Donegal.

An unusual manor of stunning beauty, born out of a crippling disease.

A remarkably intact castle that once was the largest in Ireland.

This single room has survived the centuries with almost no deterioration.

A tiny microvalley etched into the side of Knocknarea Mountain hides another world.

This 30-foot pile of rocks may be the grave of a mythological Irish queen.

A steam trawler with a whiskey-soaked history driven ashore in 1960 resides rusty but still standing on the shoreline.

While only two of the ancient buildings at this site are actually churches this was one of the earliest Irish pilgrimage sites ever.

Achill's most recently abandoned village dates back to to the Age of Enlightenment.

This Italian-style temple replica has been threatening to fall off the Irish coast for hundreds of years.

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

The lake that fills and empties itself at random.

The one-time stronghold of the noble Douglas family, now home to ghost sightings and nesting birds.

Ancient cliffs resembling a kilt on Scotland's second largest island emit an entrancing sound.

Legend says this cave housed a 16th-century cannibal and his family of 48.

A site of pagan worship which still attracts people looking for fairies.

A pagan tradition of draping trees with rags eerily lives on.