Possibly I'll have time to write more later, but I'm too tired and footsore now to do so. We went in to Chicago on the 10:20 (a train adventure that I will describe eventually) and spent the day at the Field Museum (not long enough; needs another trip). Then, thanks to a bit of miscalculation, we ended up missing the 6:30 train and having to kill more than two hours waiting for the 8:40. Anyway, we made it back eventually, but tomorrow is a work day, so more descriptions must wait.
Edit, 16:00: Linked to the story of my railroad adventure.