Terraced garden boxes are a great solution for those with uneven or sloping backyard spaces. Just be sure to install a proper drainage system. If water doesn't drain properly, it will stagnate and cause damage to your terrace structure.More:How to Build a Raised-Bed GardenUnexpected Edible Gardens
This strikes me as an interesting way off transitioning from built terrace into natural garden. Perhaps between the terrace and the steps with natural landscape beyond