Retaining walls are structural features designed to hold back soil and prevent erosion on sloped or uneven terrain. They are typically made from materials like concrete, stone, or timber, and can serve both functional and aesthetic purposes in landscaping. By creating level areas, retaining walls can enhance usable outdoor space, improve drainage, and manage water runoff. Available in various styles and finishes, they can also be incorporated into garden designs, providing a beautiful backdrop for plants and hardscaping. Well-constructed retaining walls contribute to the stability and longevity of landscapes while adding visual interest.