Inside the store, glass stairs left and right lead to the upper floor. With their minimalistic stainless steel fittings on the steps, the stairs seem to be floating in mid-air. Each step is fitted between a glass string and the wall clad in stainless steel. In a seismic zone like San Francisco, the stairs presented a real challenge for the structural engineers. With glass balustrades up to 10m long on all sides, the gallery on the upper level seems to be almost floating above the ground floor. seele’s scope of work also included the double-leaf doors integrated in the façade, glazing in the east façade and two skylights.