I think I have finished my project now. An image of the Sheave Tower of the Blair Mill, taken in every season. The complication for me was that the location is a six hour drive from home, to the town where my daughter was attending community college. My brother-in-law lives nearby and my father and brother are about an hour by car away, so I do get into that part of the country a few times a year.
I started this project last October, when we were down for (Canadian) Thanksgiving. We were down again for my father's 90th birthday in January, for Easter in early spring, an awards ceremony, where my daughter received an award in late spring, and this weekend, the end of the school term, to pick up my daughter and to move her back home. This gave me a very limited opportunity each trip, to get out and make the shot and the weather was what it was and the timing was largely dictated by my schedule.
So this is my last shot of the series, taken in the summer, using a /f3.5 24mm Nikkor PC-E (perspective adjustment) lens.
Somewhat surprisingly, this was probably the toughest shot. The area is a conservation area, so one can't just go about knocking down branches and stomping down on the undergrowth. The place was quite overgrown, so there were fairly limited places to shoot it from. I even had my long rubber boots on and had my tripod sitting in the stream that runs by the mill.