Frankfurt am Main, Germany
Frankfurt, as the heart of the FrankfurtRheinMain metropolitan region, offers an international financial centre, a Europe-wide infrastructure and one of Europe’s most important internet node points. During the past ten years, the population of Frankfurt has increased by about 75,000. The metropolitan area of about 248 km² is extremely compact which poses a challenge to create living space for the increasing growth of population as well as a sufficient industrial estate to provide the growth of the economy. Moreover, the city needs to preserve the green spaces as well, to maintain a livable area, and to address the consequences of climate change. This challeng is only made bigger, because of the compactness of the city, but at the same time, it provides an opportunity to develop and test different solutions in a proportional way.