As the result of its rich history, the streets of Mazarrón contain interesting monuments. Of special interest are its Town Hall and the Former Cultural Centre, which are of a Modernist style and stand as indications of the splendour of the beginning of the century. Behind the Town Hall is the church of San Andrés (16th century), with a beautiful Mudejar coffered ceiling and nearby, the Convent of La Purísima (the patron saint of the town). It is also possible to visit the ruins of the Castle of the Vélez family. Out of the town, there are other towers, such as the Torre de Vieja de la Cumbre (17th century) in the port, the Tower of Los Caballos and the Tower of Santa Isabel in Bolnuevo and, on the hill of El Molinete.