This riverfront promenade is postcard Porto, taking in the whole spectacular sweep of the city, from Ribeira's pastel houses stacked like Lego bricks to the barcos rabelos (flat-bottomed boats) once used to transport port from the Douro. Early-evening buskers serenade crowds, and chefs fire up grills in the hole-in-the-wall fish restaurants and tascas (taverns) in the old arcades.