Exterior, House Building Type, Concrete Siding Material, and Flat RoofLine The concrete beams support four walls, while also extending beyond to create massive, 23-foot-long cantilevers at both ends of the structure. As a result, the profile of the home looks like the letter "H" in the horizontal position, levitating on a slope.  

  Photo 1 of 14 in This Chilean Concrete Home Levitates Off a Coastal Slope