Between 1393 and 1760 Corropoli was one of the 19 dukedoms under the ruling Acquaviva family. It was given to them by King Ferrante in gratitude for the Acquavivas' assistance in defeating the attacks of the rulers of nearby Atri. Under Acquaviva rule Corropoli was greatly fortified. The reinforced city walls constructed at this time were built as protection for the baronial castle of the Acquavivas. The castle had a torture room, vast wine cellars and stalls for approximately 40 horses.