A moody and picturesque riverside ruin overgrown with vegetation.

The ruins of a sixth-century monastery sit on the banks of the River Shannon.

A guitar mounted on a wall in Temple Bar honors the Irish musician.

The remains of a majestic house that was once stood in the crosshairs of the Irish Republican Army.

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

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

These imposing walls and towers look more like the ruins of a fortress than a monastery.

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.

A stunning Victorian abbey and walled garden on a lakefront.

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

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

The oldest inn in Kilkenny was established by the first convicted witch in Ireland.

A collection of housewares from recent Irish history adjoined by a tower from ancient Irish history.

A gated cross stands on the site where an Irish revolutionary met his end.

Impressive mining ruins overlook a spectacular view of Ireland's Copper Coast.

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

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

European castle ruins in an American state park are actually the product of death and grief.

This is not your typical jungle gym.

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

Now famous as the "Harry Potter bridge," this impressive concrete viaduct has long been an icon in its own right.

Islanders once used this dramatic, otherworldly landscape to hide their cattle from Viking raiders.