The Raintasters' Tower was a tower in the College of Rain where the Raintasters resided and conducted their experiments. Experiments on stormphrax caused an explosion that dealt major structural damage to the tower. When Vilnix Pompolnius became Most High Academe, he took over the School of Light and Darkness, transferring the Professors of Light and Darkness to the Raintasters' Tower. Each time a new chain was added to Sanctaphrax, the Raintasters' Tower became more and more unstable, and it finally collapsed during a Mind Storm in Midnight Over Sanctaphrax.