The ancient Cathedral Church of Saints Peter and Paul with Dyfrig, Teilo and Euddogwy saw its beginnings in the community that formed around the seat of its founding bishops in the middle part of the 6th century. Today, Llandaff Cathedral lies peacefully in a steep hollow, once no doubt sheltered from the view of marauders by land and sea, close to vital river crossings which made it strategically secure during the early period of its development as a Christian community. This guide reveals how successive generations, changes of fortune, accidents, disasters, human courage and determination have all made their mark on this fascinating building, from the 12th to the 21st centuries.