Once upon a time, concrete was the ugly gray stuff you walked on (still is, sort of), but then people like Buddy Rhodes Studio, Fu-Tung Cheng, and Soupcan showed us what’s possible. This week we wrote about two ways concrete can be used to make tiles, and today Meld USA is showing us a third. Made with eco-friendly concrete, Krono is a line of accent wall tiles that will blow your house guests away. The eye-catching tiles measure 6 inches by 6 inches, and feature curved edges that you could install in an interlocking pattern or separate. Tiles come in white, gray, black, light blue, and light green. www.theconcretehaus.com.