The program for the new building required contemporary office space amounting 7,500 sq m along with commercial ground floor and the parking garage of 4,500 sq m, all to be located and integrated as a kind of addition next to the old office building at 22 Miramarska Street. The smaller old building has been historically preserved by the heritage authorities as a distinguished piece of the modern architectural proceedings in Zagreb from 1959 to 1962. The 'H type' spatial distribution of both old and new architectural mass has a meeting point at a pivotal place, architecturally defined by a linchpin form of the conical atrium space.