Iona Abbey is located on the Isle of Iona, just off the Isle of Mull on the West Coast of Scotland. It is one of the oldest and most important religious centres in Western Europe. The abbey was a focal point for the spread of Christianity throughout Scotland and marks the foundation of a monastic community by St. Columba, when Iona was part of the Kingdom of Dál Riata. In 563, Columba came to Iona from Ireland with twelve companions, and founded a monastery which grew to be an influential centre for the spread of Christianity among the Picts and Scots. The Book of Kells, a famous illuminated manuscript, is believed to have been produced by the monks of Iona in the years leading up to 800. In 806, Vikings massacred 68 monks in Martyrs' Bay, and Columba's monks returned to Ireland, and a Monastery at Kells: other monks from Iona fled to the Continent, and established Monasteries in Belgium, France, and Switzerland. In 825, St Blathmac and those monks who had returned with him to Iona, were martyred by a further Viking raid, and the Abbey burned.
Iona had been seized by the King of Norway, who held it for fifty years before Somerled recaptured it, and invited renewed Irish involvement in 1164: this led to the central part of the Cathedral being built. Ranald, Somerled's son, now 'Lord of the Isles', in 1203 invited the Benedictine order to establish a new Monastery, and the first (Benedictine) Nunnery, on the Columban foundations. Building work began on the new Abbey church, on the site of Columba's original church. A very early Nunnery, founded in the thirteenth century, of the Augustinian Order, (one of only two in Scotland - the other is in Perth) the Iona Nunnery, was established south of the Abbey buildings. The Abbey church was substantially expanded in the fifteenth century, but following the Scottish Reformation, Iona along with numerous other abbeys throughout the British Isles were dismantled, and abandoned, their monks and Libraries dispersed.