The structure of the new main railway station in Rotterdam is composed of two very different elements. With a grand formal gesture, the entrance hall of the central station opens out toward the city centre. Concealed behind it in an almost timid manner lies the unassuming, “subtle” terminal hall, almost 250 m long and 160 m wide. The main structure of this light-flooded platform hall consists of six 145-cm deep hollow box-shaped profiles. They run along the platforms and are connected in a frame-like way to tremendous Y-shaped steel columns. With only few column bases on the platforms, the form of the columns creates many support points for the main girders and thus reduces their free span lengths.