The ruins of this medieval castle in Northern Ireland have inspired artists from C.S. Lewis to Led Zeppelin.

This short bridge is the only thing connecting a tiny Irish island to the mainland.

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

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

A museum marks and documents the site of the Titanic's launch.

The ship built to ferry passengers and goods to the doomed Titanic is now the last remaining White Star Line vessel.

Belfast's namesake river still winds below the city center, hidden from sight.

A palatial former bank building now houses what may be the poshest art venue (and former Tesco) in Belfast.

This Victorian-era public house has set the standard for pub-style elegance for over a hundred years.

It was once nicknamed "the most bombed hotel in Europe."

The inscribed stone at Kilnasaggart is a remnant from nearly a millennium ago.

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

The severed head of a 17th-century Irish martyr lies within an intricate golden shrine.

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

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

Ireland's most remarkable collection of these curious cone-shaped houses is worth the buzz.

The somber sculptures commemorating Irish Famine on the river Liffey in Dublin.

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

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

This single room has survived the centuries with almost no deterioration.

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

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

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

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