This weekend I visited with my M4P a small sanctuary overlooking the Adda river rapids. The sanctuary has been built on top of a rock, in a dominant position. To the other side, an ancient canal, built on 1700 to allow the transport of goods, avoiding the river's rapids. The original project was initially developed on 1515 by Leonardo da Vinci, but the construction happened more than two centuries later.In the video we can still see the ancient pound locks of the canal.