A boulder in the Churchyard of Down Cathedral marks the legendary burial place of "The Apostle of Ireland."

The easternmost point on the island of Ireland.

The last working windmill in Northern Ireland.

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

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

This Italian-style temple replica has been threatening to fall off the Irish coast for hundreds of years.

A celebration of Norwegian independence, or public art gone wrong?

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

This beautiful site is where the first transatlantic telegraph was sent from.

Petrified footprints of one of the very first vertebrates to walk on land.

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

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

The largest stone circle in Ireland.

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

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

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

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

A stunning Victorian abbey and walled garden on a lakefront.

Achill's most recently abandoned village dates back to to the Age of Enlightenment.

The ruins of a medieval monastery named after a type of tree.

These Neolithic burial mounds and a still-intact passage tomb may have solar calendar significance on the spring and autumn equinoxes.

“Ireland’s only inland lighthouse” is not actually a lighthouse at all.

An Irish church where an 800-year-old mummy is reaching out of his coffin as if to shake hands.

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