A standing relief of a Norman knight whose posture marks him as a Crusader.

This neolithic stone grave has been altered and restored so often its now more neo than lithic.

Legends say that this small island was the final resting place of the Welsh saint of lovers.

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

These haunting ruins belong to an ancient village that once had one hell of a view.

Ancient Bronze Age rampart that was used into the middle ages.

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

On the Irish coast, 18 members of the Howard family are eternally resting in an Egyptian pyramid.

The remains of centuries of copper mining appear like an alien landscape.

This 30-foot pile of rocks may be the grave of a mythological Irish queen.

A tiny microvalley etched into the side of Knocknarea Mountain hides another world.

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

Oliver Cromwell once seized the land under this house, which included the ruins of a medieval abbey that the owner used to build his stately home.

The oldest pub in Ireland may also be the oldest surviving bar in the entire world.

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

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

This ancient Irish tower could easily have stood in for Rapunzel's prison.

An eccentric garden of sculptures crafted in India decorate an Irish green space dedicated to Alan Turing.

The oldest licensed distillery in Ireland.

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

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

A retired military stronghold on the rolling green coast of Donegal.

Though they've since been renamed, these two streets hint at Dublin's darker days.

The oldest public library in Ireland.