If you are looking for a good spot to rest a while and soak up some views, the cathedral backs on to the town park, the Passeggio del Prato, with the ubiquitous ruined Medici fortress at the far end.
It is the oldest and most suggestive park of Arezzo, in an area of high archeological interest.
The secular trees lie on a vast and natural depression, which some centuries ago used to separate the two hills with the Cathedral and the Fortress. Today, the park extends from Porta Stuffi towards the southern ramparts of the Fortress.