Retaining walls can be made from a number different materials such as concrete, field stones, natural stone boulders, large slabs, railroad ties and pre cast interlock. Not only do they look attractive, they are structurally sound and can also provide privacy. You can even use the retaining walls as feature walls by adding some focal points such as fountains, plants and lighting. A retaining wall made from natural stone materials provides structure all while camouflaging into your landscape contributing to a very natural and smooth finish.