The main pedestrian spine of the old town runs west from the Pentagonal Tower at the landward gate to Marafor Square at the tip of the peninsula. It is paved with smooth slabs of polished limestone, narrow enough that you can touch both sides if you stretch, and lined with a mix of Romanesque, Gothic and Venetian Renaissance facades. Many shops still occupy their original medieval premises.
Walk it slowly. The cross-streets reveal small piazzas, mossy fountains, and the occasional Roman fragment built into a doorway. In the evening, restaurant tables spill out into the street and the whole thing becomes a single long open-air dining room.