I recently came across one pretty ingenious idea for hiding unsightly walls or vertical spaces. You can do it with plants!
In the video above, you can see how a long wall was completely hidden using a clever vertical gardening technique. This would work perfectly for concrete retaining walls or other structures that detract from your view. But, be sure that the surface that you put the vertical wall on is able to get wet often. So, a wood surface would not work very well.
Follow the hints given in the video and see if this is something that you can use in your building project or to hide some unsightly areas in or around your home.