Waking up in Creston, Iowa, to the sound of diesel locomotives and bright sunlight. This is the last leg – tonight we will be home on St. Louis. It's been a wonderful vacation, full of unexpected delights and a delicious sense of exploration.

Once I get home, I can at least properly go through all the photographs I've taken with a better screen than the one my laptop provides. In a way, that will extend the pleasure of the holiday, but that's going to have to be in the evening. For it is back to work on Monday!