This did not impress the kids one little bit. The church of St. Mary's in Fairford is unique in the British Isles in possessing an almost-complete set of 15th.
Most parish churches have none, some have small scraps.
The reason for this is that England went through two phases of window-smashing. The first was the Reformation, when King Henry VIII lost his temper with the Pope and in a fit of pique closed down all the Abbeys, instructing his commissioners to treat the abbey buildings as vertical quarries of ready-cut stone. These windows are not amateur daubings either - they are believed to be the work of Barnard Flower, Master Glazier to King Henry VI and constructed c. 1500, a decade after Christopher Columbus set sail for the West Indies. There are 28 windows and they provide a pictorial and often narrative summary of the history and beliefs of the Church. The church of St. Mary's is a classic Cotswold 'wool church', built sometime around 1497 by the Tames, a family of wool merchants.