Leonardo represents and indicates Castelnuovo in the Commune of Subbiano, in the loop of the Arno that widens out toward the Arezzo plain. The fortress, standing in a strategic position at the entrance to the broad Casentino valley about 6 miles from Arezzo, is situated above the town of Castelnuovo di Subbiano, and is considered one of the most important examples of fortified settlement in the zone. In this area, in 1022, the presence of Vico di Sesto, a locality whose name recalled the distance of 6 miles from Arezzo, was indicated.
Chiaveretto sulla Chiana
Leonardo represents and indicates 'Chiaveretto' on the Chiana, an ancient castle that belonged to the Tarlati family, in the Commune of Subbiano.
Leonardo represents and indicates Montegiovi, of Etruscan origin, in the Commune of Subbiano.
By 'Sceggia', Leonardo indicates a locality in relation to the Scheggia torrent, which flows through the Communes of Castel San Niccolò and Montemignaio, passing under the Pagliericcio bridge (a locality mentioned on folio 910r of the Codex Atlanticus) and flowing from the left into the Solano (a tributary of the Arno). Coordinates taken at Barbiano.