I will miss the grandeur of old stone churches both stark unadorned Protestant and elaborate ornate Catholic ones. I will also miss how the Europeans re-imagine old architecture in new ways, such as the light show they throw on Vienna’s massive St. Stephen’s Cathedral at night. Unforgettable, too, are the rivers of tourists clicking digital cameras at the sculptures of saints inside while milling around people at prayer. There is something time-warpish about seeing stone figures of long-ago Christians juxtaposed with today’s Christians in the pews surrounding them.