Many cities seem to work under an unofficial mantra of "bigger is better". But that's not the case in the Sachsen-Anhalt region of eastern Germany, where the motto of an urban regeneration scheme, International Building Exhibition (IBA), is "Less Is Future".
Sachsen-Anhalt's population has fallen by 17% since Germany's reunification, and continues to fall. Today it is around 2.4m; Karl-Heinz Daehre, the region's minister for regional development and transport, predicts that it will fall to 1.5m by 2060 if policies remain unchanged. By 2050, 70% of the world's population is expected to be urban.
But while most cities are growing, one in every four cities is shrinking, according to Professor Philipp Oswalt, head of both the IBA and the Bauhaus Foundation in Dessau. But embracing shrinkage, the IBA argues, can be a stimulus for re-inventing cities that are smaller, and promoting their quality of life.