The severed head of a 17th-century Irish martyr lies within an intricate golden shrine.

The ruins of a medieval monastery named after a type of tree.

This burial pyramid in central Ireland is thousands of miles and thousands of years away from its Egyptian inspiration.

The remains of this deep, dark mine have left behind a haunting rocky warren of tunnels.

A stunning Victorian abbey and walled garden on a lakefront.

Ireland's most remarkable collection of these curious cone-shaped houses is worth the buzz.

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

A spectacular hidden beach in Ireland has the dark, disturbing nickname of "Murder Hole Beach."

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

The mummified heart of a saint lives on in this church—after a brief hiatus when it was stolen.

The comedy and tragedy of Oscar Wilde is preserved in a Dublin park, captured in a sculpture of colorful stone.

A moody and picturesque riverside ruin overgrown with vegetation.

An Iron Age fort on the edge of a seaside cliff offers a glimpse into an ancient, mystical world.

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

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

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

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

Perfectly preserved ancient monastery in an impossibly dramatic location on a rocky island in the Atlantic.

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

The ancient tomb acts as a calendar that keeps perfect time.