A play palace for the bath! Attach the Bath Fun - Castle with Studded Stacking Cups to the tiles above your bath. Pour water into the blue and red bowl and watch the water continue its way through the rat and the tube through the tap and slots back into the bath. Meanwhile, the mills and the rat start turning. With the 5 included hamburger cups you can stack, pour and sort! The sturdy plastic Bath Fun - Castle with Stacking Cups guarantees many hours of splashing fun!