"The Brazen Serpent," 1781, Salisbury Cathedral. "Even so must the Son of Man be lifted up." The windows Serena sees at St. Andrew of the Cross were probably older, say Christopher Wren era, but isn't this cool?
the interior of Salisbury Cathedral is illuminated by trails of candles carried by choristers during the annual "darkness to light" advent procession in Salisbury, England. From Getty Images, The Atlantic