CallisonRTKL is an international architectural office founded in 1946 in the United States. The company employs over 1600 employees. Their projects were build in several countries in North America, Europe and Asia. One of the buildings designed by CallisonRTKL is Posnania Shopping Center in Poland. I was asked to take the pictures of it in 2018. In the following years I also took pictures of the Mercedes Platz complex in Berlin.