Interior stairway for a construction project in Switzerland. The stairway is made completely of sharp-edged stainless steel without visible welding seams. The glass banister pane is clamped in place as a single piece in the stairs without visible join. The LED light sculpture leads throughout the entire house, from the entrance to above the patio. The stairway is supported by a bundle of upright rectangular profiles beneath the stairs. Design and construction: Polenz.