This ancient street literally splits old Naples in two and was the decumanus inferior (minor road) of the ancient Roman city. Forming an arrow-straight line from Piazza Gesù Nuovo in the west, it is mainly pedestrianized and always crowded with a characterful mix of tourists, students and locals jostling past grocery stores, souvenir shops, fast-food stands and crumbling old palazzi. It’s a great introduction to Naples.