Sirena's Castle Sirena's Castle was the stronghold of Queen Sirena, located on Sargasso, a world likely not far from Earth. When the Green Lantern known as Hal Jordan of Sector 2814 was captured by the Queen's troops, he was held in the upper most chamber of this castle. Appearance The Superman/Aquaman Hour of Adventure Sirena, Empress of Evil References ↑ As seen in Sirena, Empress of Evil (1967). ↑ As seen Sirena, Empress of Evil (1967). Retrieved from "https://superfriends.fandom.com/wiki/Sirena%27s_Castle?oldid=58872" Categories: Locations Buildings Filmation Community content is available under CC-BY-SA unless otherwise noted.