HUBER built this functional car park featuring 15 split levels including the highly sophisticated façade construction for the public property management authority of North-Rhine Westphalia at Aachen. The parking levels are furnished with colour-coordinated parking bays, stairway doors and level markings. Especially at night the signal colours are reflected by the white ceilings and create a bright and colourful atmosphere. During the day the façade seems opaque, but at night, it appears transparent. Its high level of air permeability provides for natural ventilation.