 The space is dominated by a large panel that reproduces an antique print showing Ferrara at the end of the 15th century, when the architect Biagio Rossetti had started the enlargement of the city ordered by Ercole I (the "Addizione Erculea") and the new walls had already been built to the North, with the old walls still awaiting demolition.The still navigable Po is in foreground position.At the end of the main piazza (on the right the cathedral, on the left the Palazzo Ducale, behind which are poking out the towers of the Castle), is portrayed a gate which closes it off, while behind the built-up areas the old walls can be seen.