A stunning medieval castle owned and restored by the famed actor Jeremy Irons.

This rare and ancient Christian relic is one of Ireland’s oldest freestanding stone crosses.

It's said this geological anomaly was caused when the Devil took a bite out of the Irish mountainside.

The symbolic center of Ireland, this summit also offers panoramic views of the countryside.

A mysterious plaque to the even more mysterious "Fr. Pat Noise," killed in "suspicious circumstances."

An Irish peat mine has become a stunning sculpture park.

This supermarket offers shoppers a window into the past alongside their groceries.

The world's only flying boat museum honors a small Irish village that sent 20th-century aviation to new heights.

Ireland's only German military cemetery holds the remains of a spy who was moved there under the cover of darkness.

A former fortified tower now houses a collection of classic communications equipment.

This Neolithic passage tomb forms part of a World Heritage Site.

A mysterious Neolithic tomb is perched along the edge of a modern golf course.

Dublin's most modern, visually spectacular bridge is modeled after Ireland's national emblem.

The whiskey producer's archives includes a historical list of infractions committed by and associated penalties exacted upon employees.

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

Some of the saint's blood and bones are said to reside in Dublin.

Mortarless walls that stretch for miles are a lovely solution for creating grazing land in the harsh terrain of the Aran Islands.

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

This 5,300-year-old tomb with mysterious carvings crowns an Irish mountain.

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

An outstanding and haunting glimpse of the horrors of the Great Famine of Ireland.

An important pilgrimage site for pagans and early Christians, named for a Celtic goddess-turned-saint.

You can see three Irish counties from this Neolithic hillside fort, once the seat of the Kingdom of Ailech.

The oldest licensed distillery in Ireland.