Walking along the Seine and the D113 road, on the right, you pass in front of the Machine buildings which were used to house employees, the administrative buildings and repair workshops. This group of buildings has been listed as a National Heritage Site since 1987.

As you go up the ramp by which the Machine parts were taken to the workshops for maintenance, you can see a porch (17th century) which takes you into the courtyard overlooking the Machine buildings.