The period between WWI and WWII saw overcrowding push authorities into constructing a series of suburban housing estates on the outskirts of Wrocław. One of the highlights is Sępolno (then known as Zimpel), a model estate designed by Paul Heim, Hermann Wahlich, and Albert Kempter in the international style and built in the years 1919–1935. The tree-lined avenues and neat two-storey houses are unremarkable in themselves, but the street plan is completely unique: when viewed from above at just the right angle, the strange network of streets resembles an eagle. Discussion still continues as to whether the eagle is from the German or Lower Silesian coat of arms, what the architects' motivation could have been, or whether there is any eagle at all. To see this place from the ground, you can take tram no. 9 or 17 from 'Galeria Dominikańska' to 'Sępolno'.