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

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.

An 1814 castle that hosts an exhibit of "explorabilia".

The world's toughest modern Christian pilgrimage leads directly to the gates of Hell.

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

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.

Experience what life was like in Ireland during the Viking and medieval ages.

More than 5,000 artifacts donated by the people of the city, plus a room entirely devoted to the band U2.

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

Once the longest bridge in Ireland, this rusting span sits abandoned and overrun by nature.

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

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

The oldest public library in Ireland.

A corkscrew-shaped barn in Ireland.

A nun spent 16 years painting the stunning Celtic mural that covers the interior of this WWI memorial.

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

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.

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

A moody and picturesque riverside ruin overgrown with vegetation.

Obelisks and stone pineapples in the Irish countryside.

The oldest inn in Kilkenny was established by the first convicted witch in Ireland.