On the former site of the Deutsche Bank in Frankfurt, an impressive quartet of high-rise buildings has been completing the skyline of the Main metropolis for some time: the design of the four buildings, including the third-tallest high-rise in Germany, was created by the Amsterdam-based architecture firm UNStudio; Werner Sobek Frankfurt, in a joint venture with Bollinger + Grohmann, was responsible for the structural engineering.
Photos: Lars Gruber