The clearest image of the final structure of the Turin defensive system is given back by the plan drafted in 1790 by Ignazio Amedeo Galletti (1726-1792), now within the imminence of the Napoleonic era dismantling. The drawing shows the city surrounded by a bastioned façade that preserved the trend assigned to it during the successive phases of defining the inner city, but much more articulated thanks to the addition of external works and a decisive enlargement of the moat and the counterscarp.
Today all that survives is the relevance of the Giardini Reali (Royal Gardens): some sections of the curtain that mark the difference in height between the parterre of Palazzo Reale and the park below, the bastion of San Maurizio and the Bastion Verde. The latter corresponds to what remains of the rampart that protected the northeastern corner of the sixteenth-century city, built in 1536-1543 based on a French idea, redesigned and enlarged to the east when the eastern enlargement of the city was completed at the end of the seventeenth century. As shown by a relief of the early seventeenth century commissioned to Charles of Castellamonte, it was originally a bulwark with curvilineal trusses; this is what has survived on the west side. Very particular is the "casino" that rises near the top of the rampart
