The German city of Freiburg set itself the goal of urban sustainability as early as 1970
Green spaces are both protected and enhanced
40% of the city is forested with of 50% of these woodlands protected as nature conservation areas
Only native Balck forest trees and shrubs are planted
social dimensions include the provision of 'affordable' energy-saving homes and locals are encouraged to the financial dividends, investors receive free football tickets
economic dimensions include the creation of 10,000 jobs and 1,500 environmental business