The Royal Palace of the Hasmoneans

Located on the Western side of the Upper City. It contained a roof called the Xystus with where the people in the large square below could be addressed. It had large courts, living quarters, baths, and a service court. [Model of Ancient Jerusalem during the time of Jesus and the second (Herod's) Temple, before its destruction in 70 AD. Built by archaeologists according to various historical sources: Josephus, the Mishnah, the Talmuds, the Tosephta, and the New Testament as well as archaeological discoveries. It uses mainly the same materials as the original].

Link: https://bible-history.com/acp/images/hh/hasmoneans_palace.jpg