The Etika spiral staircase in waxed natural metal was created for the luxury penthouse inside the Citylife residential complex designed by Daniel Libeskind. In addition to curved elements on the central structure, an additional element has been created on the ceiling consisting of three radiated blades cut to design, with the aim of making the whole more organic; The central pole was built around a pre-existing pillar covered in stainless steel sectors with integrated lighting, with the end of the central helix organic shape; for the walkway to the loft were maintained welding and frosting on sight.