The biggest island in the loch, known as the Isle of Loch Tay, or in Gaelic , 'Isle of Holy Women', is just north of Kenmore. It was the site of a nunnery in the 12th century and was the burial place of Queen Sibylla (d. 1122), wife of Alexander I of Scotland (1107–24). A castle was built on the island in the later Middle Ages. Signs of 18 crannogs, "circular houses on stilts", have been found Loch Tay. Only one was rebuilt and became the museum known as the Scottish Crannog Centre.