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

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

Traveling this mountain pass reveals quaint stone buildings, stunning Irish scenery, and a bridge said to grant wishes.

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

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

The home of Ireland's last leprechauns is officially protected by the European Union.

A hugely vast Irish landscape of barren rock that stretches for miles.

A steam trawler with a whiskey-soaked history driven ashore in 1960 resides rusty but still standing on the shoreline.

Certain traditions prevail on the least-visited island of the Aran Islands.

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

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.

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

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

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

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

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.

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

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

A corkscrew-shaped barn in Ireland.

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

A moody and picturesque riverside ruin overgrown with vegetation.

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