Now an ecumenical church, Iona Abbey, is of particular historical and religious interest to pilgrims and visitors. For one, it’s the most elaborate and best-preserved ecclesiastical building surviving from the Middle Ages in Western Scotland. Though modest in scale compared to medieval abbeys elsewhere in Europe, it has a wealth of fine architectural detail, and monuments of many periods: in front of the Abbey stands the 9th century St Martin’s Cross, one of the best-preserved Celtic crosses in Britain; the ancient burial ground, called the Rèilig Odhrain, contains the 12th century chapel of St. Odhrán and a number of medieval grave monuments. The abbey graveyard holds the final resting place of kings from Ireland, Norway and France, as well as a number of early Scottish Kings, including Malcolm, Duncan, and Mac Bethad mac Findlaích, better known as MacBeth.