While the light-diffusing Sky-Net is a feat of technical virtuosity, the transport hub is grey and glassy, with the placeless feel of a shopping mallIt’s rush hour in Fulton Center and thousands of black-coated commuters stream into the glass building through entrances on Broadway and Fulton Street and funnel down to the hovering circular concourse before branching off to further descend to the many tunnels that transverse New York’s five boroughs.