 Besides these public squares, one can glimpse (and smell) the flowering plants in the patios of private houses.The Callejón del Agua, an alley parallel to the city walls, was once the route along which water was brought to the royal Alcázar of Seville, and was once the home of the American writer Washington Irving, as is recorded by a plaque made by Mariano Benlliure.The alley also leads to one of the exits from the neighborhood, via the Jardines de Murillo.