Attractive outdoor stair designs, can instantly play up the exterior appearance of your house. And for modern homes, outdoor floating stair design can be the best choice. Adding an outdoor floating stair is a way to make your home unique, and this type of staircase is particularly attractive in a home with modern or minimalist decor. There are many variations on the concept of an outdoor floating staircase. Typical floating staircases have no visible riser and no decorative trim of any type. Often, these staircases have no stringers, and if the staircase does have stringers, they are exposed and visible. The steps on these staircases are often made from wood, though some are made from clear glass or plastic designed specifically for stairs or steel.