Jacaranda

These trees that you see in the image are Jacarandas (Jacaranda mimosifolia). This tree has its origins in Brazil, Paraguay and northern Argentina, and it was named by the original name that was given to this plant in Brazil. It is a fast growing deciduous tree, and it is resistant to urban conditions as indicated in plantations of alignment. (Source: infojardin.com).
This set of jacarandas you can find it on Avenida Mariano Rojas, in the city of Murcia.