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This one is great, Dave. There's something so simple and elegant about these old mechanisms; they don't seem to intrude upon nature at all.

Thanks, Jack--good to hear from you.  This is Thomas Winan's waterwheel along the stream in a  nearby Park, part of which is Winan's former estate. The scion of a shipbuilding family, he was an engineer who directed the construction of the railroad from Moscow to St. Petersburg in the 19th century . There seems to have been no mill or other structure associated with the wheel so it's purpose is the subject of head-scratching speculation among the locals (myself included.)