This is the plain end of the cathedral building which is an absolute marvel. The cathedral is absolutely huge and carving etc is so intricate and super ornate. Originally dating from the early 1200's it was aded to until around 1300 so is a very old structure but still in very good condition although renovation work is ongoing on it. Our Lady of Reims has held most of the Coronations for the Kings of France so is steeped in history.