The answer to 'what is retaining wall' is a structure designed to hold back soil or other material on an incline. Retaining walls are commonly used in landscaping to create terraced gardens, prevent erosion, or level out a sloped yard. They are typically made of sturdy materials like concrete, stone, or interlocking blocks and can be both functional and decorative.
Retaining walls help stabilize the soil and prevent it from shifting or sliding down a slope. This is important for maintaining the structural integrity of your landscaping and preventing damage to your home or other structures. Properly designed and installed retaining walls can also enhance the aesthetic appeal of your outdoor space by creating raised beds, tiered gardens, or defining different areas of your yard.