Here’s a gorgeous design using concrete blocks. Massive concrete blocks, that is. If you’re browsing through any cinder block retaining wall ideas, this one may be the design to stop at. The blocks are neutral grey, but huge and textured to add interesting character and depth to any garden space. The stone steps cut into the massive blocks looks almost like a fairy tale scene in the woods. This is a great idea for a summer getaway home or lodge in the mountains.