Bangor, once the site of one of the largest Christian schools in Ireland, was the jumping off point for the famous missionary journeys of Columbanus and Gall. The Bangor Antiphonary, which is now in the Ambrosian Library in Milan, was the flowering of a style and depth of worship with unique appeal. In his 'Light of the World' Ian Adamson has combined literary skill and scholarship to describe how one of the main strands of European civilisation developed out of the Judeo-Christian tradition of the Middle-East and to bring out the full scope of how Bangor became the focus for religious life of great depth and power in the early medieval period of Europe."