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

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

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

These moss-covered medieval ruins tower atop the smallest of Ireland's Aran Islands.

A Neolithic passage tomb said to have sheltered two legendary Irish lovers.

The remains of a 13th-century Franciscan friary have survived multiple attempts at destruction, most recently in 1921.

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

A collection of housewares from recent Irish history adjoined by a tower from ancient Irish history.

These imposing walls and towers look more like the ruins of a fortress than a monastery.

A corkscrew-shaped barn in Ireland.

A meandering boardwalk across the bogland leads to a "stairway to heaven" with sublime views.

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

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

Fluffy and friendly alpacas nestled against the border of the beautiful Connemara region.

This controversial Irish show cave is home to a massive formation known as the Great Stalactite.

The largest portal tomb in Europe has a capstone weighing around 150 tons.

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

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

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

Modern sundial uses ancient methods to tell time and date perfectly.

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

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

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

A moody and picturesque riverside ruin overgrown with vegetation.