English Cathedrals - Norwich , South side of Nave - Exterior of Nave. Part of Box 144 Boswell Collection - English Cathedrals . Norwich Cathedral is an English cathedral located in Norwich, Norfolk, dedicated to the Holy and Undivided Trinity. It is the cathedral church for the Church of England Diocese of Norwich and is one of the Norwich 12 heritage sites. The cathedral was begun in 1096 and constructed out of flint and mortar and faced with a cream-coloured Caen limestone.