This is a Loire River Barge, taken from on high on the walls of the chateau of Chinon. The photo is slightly distorted because it has been taken through an old glass window.
These barges were built upstream, and then in spring they were filled with goods and sailed to Nantes or Saint-Nazaire. There not only were the contents sold, but the boat was sold as lumber. Then the owner would return home (presumably by foot or cart) and build another boat.