Castles and ruins
Ireland is full of ruins of religious buildings, castles and cottages. The piles of rocks, in varying degrees of destruction, can mainly be attributed to the Vikings, the British and famine (also, in part, the British). The Vikings famously loved a good pillage and the rich Irish monasteries and abbeys of the time were raided frequently. The British loved to invade and subjugate and when done destroying, built their own bigger and better castles. And the famines of the mid-18th century led to mass emigration that left houses and entire villages abandoned. This trio of terror has left the Irish countryside dotted with evocative and scenery-enhancing ruins and some towns, like Kilkenny and Trim, showcase excellent specimens of still-standing castles.