The project team designed and manufactured 8,000 m² of Kirchheimer Shell Limestone components. Most of this will be used externally as rear ventilated cladding, however a small amount is destined for the internal fit-out. Once completed the MK3 office building situated close to Berlin's Nordbahnhof (north station) will provide 37,000 m² of floor space for end-user, Deutsche Bahn AG.