Retaining walls provide a functional and beautiful addition to landscaping. If you add a patio or pool to your backyard, it will help stabilize any slope that has been created after the ground has been leveled. Plus, they are often installed to match the house’s facade when a front yard can’t be leveled out and help cover up a large area that is not even with the rest. They can also line a walkway leading to the house as a stairway.