Our Penrose design is a beautiful choice, and as you can see, we have plenty of examples of this staircase below. This staircase can be straight or winding and is built with a stringer which can be painted in any colour. This metal string staircase design suits best with open risers to enhance its modern appeal. The spacing of the risers enables natural light to flow through the room, adding an illusion of a more open and bigger space.