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

The somber sculptures commemorating Irish Famine on the river Liffey in Dublin.

The ruins of an 800-year-old monastery boasts the tallest round tower in Ireland.

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."

There might not be much left of these Irish ruins, but their linguistic legacy is still going strong.

This singular Irish dolmen is more Frank Lloyd Wright than upright stonehenge.

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.

An ancient neolithic tomb that only sees the sun twice a year.

A sacred well steeped in Pagan roots on the West Coast of Ireland.

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

A moody and picturesque riverside ruin overgrown with vegetation.

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

Dublin's "Dead Zoo" serves as a window to Victorian museum design.

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

This ancient Irish religious site is covered in ancient carvings, many of which have barely aged.

The enchanting archway is the only surviving portal into Dublin's lost medieval wall.

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

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

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

One of Ireland's most infamous prisons for rebels including men, women and children.

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.