The Great Hall of Birren served as the regal residence for the Elder House located on the world of Birren. Within its walls, the Great Hall housed a treasure chamber, where, alongside some dilapidated droids and various other mementos, a significant communication was stored: a message penned by Bail Organa addressed to his adopted daughter, Leia Organa, revealing the truth about her father's identity as Darth Vader. This message was later unearthed by Carise Sindian, the governor of Birren, who then exploited it to tarnish Organa's public image.