 Complete the following phrase:  The site of Vilhena Palace has been inhabited since ancient times, and post-Punic remains have been found in the area. In around the 8th century, a Byzantine fort was probably built on the site, and in the Middle Ages it developed into a castle known as the Castellu di la Chitati. The castles inner walls were demolished in the 15th century, and the remaining part was built up as a palace by Grand Master Philippe Villiers de LIsle-Adam in the 1530s. The palace was called the Palazzo Giuratale, and it housed the civil administrative council known as the Università. The structure was damaged in the 