Stained glass is intimately linked with Gothic churches and the great flowering of Christian art and architecture that began in the twelfth century. In France alone, around eighty cathedrals were built between 1180 and 1270. Stained glass evoked the medieval theological idea of God as heavenly light and pointed to the description of the Heavenly Jerusalem, adorned with shining gemstones, contained in the Book of Revelation. The subject of this window is probably St Stephen of Hungary receiving the apostolic crown sent to him by Pope Sylvester II. This small circular panel would have formed part of a larger, more complex window.