Abstract: A waterfall-simulated wall structure for a shower stall/tub for providing a unique outdoorsy type of environment for taking showers. The waterfall-simulated wall structure for a shower stall/tub includes a wall assembly including portable walls being adapted to be spaced from stall/tub walls forming a conventional shower stall/tub, and being arranged to allow water to occupy the space between the portable walls and the stall/tub walls, each of said portable walls having a front side which simulates a side of a waterfall, said wall assembly further including rock-simulated members being attached at bases of the portable walls for allowing a user to rest one's feet thereupon when washing.