tranquil japanese garden with waterfall, koi fish, and stone lanterns. concept of zen serenity, nature harmony, oriental

japanese garden waterfall lanterns zen nature tranquility serenity harmony oriental tradition culture landscape peaceful koi fish flora green stone decor water reflection lush foliage calm scenic meditation peacefulness exotic natural aesthetic beauty decorative heritage ancient mystic serene outdoor environment relaxation symbolic artistic style tranquil concept landscaping traditional ai generated