So that stave churches, the old relatively untouched ones, do not blend together in the mind, think of silhouettes, rooflines. Vik: a broad underskirt roofline, with 3+ smaller rooflines on top. Borgund, the more heavily touristed, has 6 rooflines, the lowest one is narrow. Do a search in images to compare the two.
Arrive at Vik, after that lovely better-than-norway-in-a-nutshell drive over the mountains, and find that the camera refuses, refuses. Ask your son: please can I use your camera, please, please. And ultimately we agree that I can use my card from my dead camera, put it in his, and click away, then do the card swap back again.