caption: The image shows an open book with a drawing of a floor plan of a building, which is likely a plan of the Palazzo dei Palazzi in Rome. The plan is detailed and shows the various rooms and hallways of the building, as well as the placement of windows, doors, and other features. The text on the page provides further information about the layout of the plan, such as the number of rooms, the size of each room, and the location of the windows and doors.