The Sanctum of Prophecy in Janusopolis is one of two new areas introduced in Version 3.1 of Honkai: Star Rail. Players first explore this area while uncovering the past of Tribios, the Holy Maiden of Janusopolis, and the first Chrysos Heir to become a demigod. The Sanctum of Prophecy is filled with new chests, puzzles, and exploration mechanics, including several new Nymphs for players to locate.