Time and tide

There are huge tides on the river Rance, up to about 40 feet, and there is a corresponding number of tide mills on the river.   The old ones are quaint, and, mostly I think, no longer in operation.  (Why not?)  There was one called the Moulin Neuf that was on the road between Dinard and the gardens at Montmarin.  The format is typical there - a dam, and a mill at the edge of the water.  I believe that it offers holiday accommodation; looks like a nice place to stay.

EDF have a huge working tide mill that generates lots of electricity and also forms a bridge over the river Rance between Dinard and St Malo.   You can park there and read the notices about how eco-friendly it all is, and I understand that you can go inside and have a look, though I didn't.