Concrete is tough and really lasts. Concrete retaining walls are tough and surprisingly affordable, though not as cheap as timber sleepers. Concrete is great for use on quite steep slopes, narrow blocks and uneven terrain.
Concrete is great to cope with the extra weight of soil for areas where you need a higher wall.
Concrete sleeper retaining walls are strong and not prone to rotting or termites or other insect-related issues. Concrete walls are also easy to clean and maintain.
The concrete can either be left bare or covered with panels to make them fit with your property and surrounding areas.
Concrete sleeper panels can be installed with metal galvanised steel posts and come in a range of styles, textures/patterns & colours.
They can be smooth concrete or textured to resemble natural stone at much less cost than natural materials.