Chartres Cathedral in the medieval town of Chartres, about 50 miles from Paris. Not only is Chartres Cathedral one of the greatest achievements in the history of architecture, it is almost perfectly preserved in its original design and details. Chartres' extensive cycle of portal sculpture remains fully intact and its glowing stained-glass windows are all originals. Chartres is thus the only cathedral that conveys an almost perfect image of how it looked when it was built.
File:Avignon, Palais des Papes depuis Tour Philippe le Bel by JM Rosier.jpg