Cathédrale Saint-Pierre in Lisieux

You're standing at Saint Peter's Cathedral in Lisieux, in Normandy. Start with the west front. Three portals, and two towers on top. Notice they don't quite match? There's a reason. The old south-west tower collapsed, and a new one went up in 1553. The spire on top is even younger, from the seventeenth century. If you walk along the south side, look at the buttresses. Those were added in the fifteenth century.