With 650 rooms and two underground parking levels, Nhow Amsterdam RAI is the largest hotel in the Benelux. Its architectural design consists of large triangular volumes stacked on top of each other. The volumes are postioned each in a different angle, cantilevering 16,5 metres out from the structural core in the centre of the building. All the forces of this impressive, 24-storey building are absorbed by the core which includes eleven elevator shafts. Because of the smoothness, quality and appearance of the concrete work, the architect has chosen to leave the surface of the ceilings of the hotel rooms unfinished.