The peculiar modelling grand buildings and the blue Danube water hand in photograph reflect, has become a sight of the city of Vienna. The total area of 190000 square meters, the complex is made up of four main building. The central stands a 5 layer cylindrical international conference mansion, 56 meters high. 6 "Y" shaped buildings, respectively installed 3 towers office towers, symmetrically arranged in a constellation around the conference building.