 The remains of the old feudal castle are preserved, along with a 16th-century coastal tower, the clock tower, the beautiful church of St. John the Baptist, the small church of the Crucifix, and various noblemen's homes, many of which have magnificent marble doorways from the last century.Rosarno is largely agricultural, with citrus and olive groves and juice and candied peel factories.Much of the work is done by illegal immigrants from Africa and Eastern Europe, who gather every morning in the main street in the hope of being picked for a day job.