The first structure to be built – the Fastweb headquarters – is in the northernmost section of the area. Created for managerial and commercial activities, the entire facility of about 19,000 m2 has an L-shaped plan oriented mostly on an east-west axis. The southern and lateral elevations feature a pattern of windows in aluminium, recessed with respect to the stoneware cladding. Produced by Schüco in a custom version, the groupings of three non-opening frames (1350x2700 mm each) are flanked by opaque infill panels.

The main facade of the building, to the north, is instead entirely transparent to maximize natural lighting in the workspaces and to permit a direct view of the urban context, which includes the famous Fondazione Prada and the new tree-lined plaza named for the entrepreneur Adriano Olivetti. To accentuate the sense of continuity between interiors and the landscape, and to respond to specific criteria of sustainability, efficiency and technological excellence, the large glazings of the facade have been specially made by Schüco with a unique system of cells, in which each single glass partition measures 1350x3900 mm.