The panel devoted to Roma (Rome, Italy) is more of an oblique view than a relief plan. The view is from the south west which ensures that the most prominent feature in the foreground is the wall and bastions'along the ridge of the Gianiculum Hill. These works were erected on the orders of Urban VIII (1623-1644) to link the fortified area around the Vatican Palace, known as the Borgo with Trastevere. The Borgo itself is clearly delineated as is the Castello St. Angelo and its surrounding bastions. Paul III (1534-1549) defended the Borgo with bastioned walls whilst Pius IV (1559-1565) doubled the urban area of Borgo and enclosed this area with a wall anchored on the newly bastioned Castello St. Angelo.
Towards the top right of the panel can be seen further elements of a bastioned trace erected by Paul III in an attempt to replace the full circuit of the late Roman 'Aurelian' walls, a project which was never completed. Otherwise the Roman and medieval walls are shown as a series of small rectangular towers strung along the curtain wall like beads on a wire. A number of important structures can be identified within the city including the Theatre of Marcellus, the steps up to the Capitoline Hill, Trajan's Column and Market and of course the Colosseum. The seventeenth century walls of Rome remain very well preserved and present a magnificent if rarely visited spectacle.