Wander among the abandoned ruins of this once-powerful medieval town.

This Irish museum in a historic 19th century market pays tribute to the glory of butter.

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

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

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

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

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.

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

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

The oldest public library in Ireland.

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

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

A corkscrew-shaped barn in Ireland.

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

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

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

A moody and picturesque riverside ruin overgrown with vegetation.

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

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

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

A museum that cashes in on its infamous little people while teaching you a thing or two about the Irish fey.

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

The ancient tomb acts as a calendar that keeps perfect time.