Rock of Cashel

Hore Abbey (also Hoare Abbey, sometimes known as St.Mary's) is a

Athassel Priory is the largest medieval priory in Ireland, stretching

Cahir Castle (Gaeilge. Caisleán na Cathrach), one of the largest

Galtymore (Gaeilge. Gaibhlte Mór), sometimes spelt Galteemore, is a

The Callan Augustinian Friary is situated in Callan, Co Kilkenny,

Kells Priory is one of the largest and most impressive medieval

Lismore Castle is located in the town of Lismore, in County Waterford

Castle Oliver (also Clonodfoy) is a Victorian mock castle in the south

Rumkale was a powerful fortress on the river Euphrates, 50 km

Tsarevets (Bulgarian: Царевец) is a medieval stronghold located on a h

Tustan  was a Medieval cliff-side fortress-city and customs site of

Hammershus is Northern Europe's largest medieval fortification,

Bolsover Castle is a castle in Bolsover, Derbyshire, England (grid