Granite Pavilion with Inverted Steps: Urban Volume Extruded Layer by Layer with Cantilevers

Design an art museum on a Manhattan corner in the manner of Marcel Breuer as an inverted ziggurat, each floor cantilevering further out over the street than the one below. Compose a monolithic grey granite mass with three asymmetrically placed trapezoidal windows of different sizes punched into the blank facade, a sunken sculpture court crossed by a bridge at the entrance, no ground-floor shopfronts, neighbouring brownstones for scale, flat overcast daylight, low pedestrian view along the kerb, 28mm lens, architectural photography, ultra photorealistic, 8K