York Minster - panel from the St. William window, showing a man being seized by a devil. The St William Window is one of the most important pieces of medieval stained glass in the world. It is apporoximately 24 metres high and 4.88 metres wide (approx 72 x 14 feet).
It's called Chartres Blue. It is a blue that is unrivaled in any stained glass in the world. Just a 40 minute trip from Paris, The cathedral stands out as a medieval skyline on the french plains as you approach the town.