Stained-glass window. This window is part of St Vitus Cathedral, Prague, the Czech Republic. It is the Cyril and Methodius window (the names of the two saints featured), and was made by Alfons Mucha (1860-1939). It is not technically a stained-glass window, as the glass was painted, not stained. The cathedral is part of Prague Castle, and dates back to 926, though it was not completed until 1929.