Tendōkyū(天道宮) is a massive Treasure Tool in the form of a floating landmass with a large palace constructed on it. It was used by its creator Gavida as his personal quarters until his death, and was then used to house "Flame of Heaven" Alastor, Wilhelmina Carmel and Merihim on their search for the next "Flame-Haired Burning-Eyed Hunter".