The dominant street trees in Sevilla are jacaranda and orange. Visiting in May, we were too late for the scent of orange blossoms, but our timing was perfect for the lavender bloom of the (unscented) jacarandas. The purple-carpeted passageway in the photo was taken from the east side of Rio Guadalquivir just south of Puente del Alamillo on a wide pathway that borders the arterial road.
The jacaranda is native to the tropical and subtropical regions of the Americas. It would be interesting to know when they first appeared in Sevilla.