One of the oldest scientific gardens in Britain, containing more than 13,302 plant species in its core collection.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

A stunning Victorian abbey and walled garden on a lakefront.

This small Irish village suffered the greatest loss of life when the Titanic sank.

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

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

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

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

A tribute to the incredible generosity the Choctaw Nation showed the Irish people during the Great Famine.

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

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

Ruins battered by centuries of war and disaster offer a wondrous glimpse of medieval Ireland.

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

The home of Ireland's last leprechauns is officially protected by the European Union.

An important pilgrimage site for pagans and early Christians, named for a Celtic goddess-turned-saint.

Behemoth, cannon-like telescope operated by generations of Irish earls.

This burial pyramid in central Ireland is thousands of miles and thousands of years away from its Egyptian inspiration.

You can see three Irish counties from this Neolithic hillside fort, once the seat of the Kingdom of Ailech.

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

The oldest licensed distillery in Ireland.

Just another ancient, mysterious Irish stone circle.

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

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