Herod gave it the character of a palatial desert fortress, similar to those he built or rebuilt at Masada, Herodion and Machaerus. Herod used the fortress as a prison for his political opponents, holding his 2nd wife, Mariamne and her mother, Alexandra there in 30 BCE. It was also the burial site of Alexander, son of Herod, and Aristobulus, two of his sons whom Herod had executed at Sebaste in 7 BCE.[3]