Andria (änˈdrēä) [key], city (1991 pop. 90,063), in Apulia, S Italy. It is an agricultural and service center, handling wine, olives, and almonds. Andria was founded in the 11th cent. It was a favorite residence of Emperor Frederick II, who built (13th cent.) nearby the imposing Castel del Monte with eight round towers. There is a restored 12th-century cathedral, which has an 8th-century crypt.