The cathedral is a wonder of medieval architecture and its precincts, which include the original medieval bishop's palace with a moat watered by the springs, extensive grounds, and an enclosed street – the “Vicars’ Close” – which is the oldest extant [[medieval]] street in Europe, are the biggest ecclesiastical grounds in the country. | The cathedral is a wonder of medieval architecture and its precincts, which include the original medieval bishop's palace with a moat watered by the springs, extensive grounds, and an enclosed street – the “Vicars’ Close” – which is the oldest extant [[medieval]] street in Europe, are the biggest ecclesiastical grounds in the country. |