If you’re going to erect a long molded concrete wall, you’re going to be doing a lot of vertical pouring, and one of the most cost-effective ways to do that is with a decorative form liner.

From skate parks to highway barriers, concrete walls are taking on a new look. Rather than monstrous monoliths of flat concrete looming on the horizon, extraordinary three-dimensional creations are popping up in cities and suburbs, along highways and beaches, next to mountains and in deserts — as one-of-a-kind works of art.