CultNature is project which I initiated with Hans-Peter Noll, Andreas Kipar and Michael Krüger-Charlé. It is financed by a grant of the State of Northrhine-Westphalia. It aims at sustainable city development. Thefocus is on those areas in Northrhine-Westfalia which suffer from the abandoning of coal mining. Abandonment of coal mining leaves many brownfields which have a negative impact on cityscape, locational quality, quality of life and city development. Re-cultivation of brownfields is usually expensive. The CultNature concept offers a solution to this problem, namely to restore brownfields as parks and finance their construction and maintainance through the production of biomass and other renewable energy on the sites. The parks shall build to green axes of urban development and industrial transformation. With its business partners, RAG Montan Immobilien, NRWurban and Kipar Landschaftsarchitekten, and with scholars and other experts from different disciplines, the Institute of Work and Technology is developing and testing the CultNature concept and conducts a number of pilot projects. In some of these projects, different ways and means of configuring and using bio-mass landscapes will be tested; in other projects different strategies to effectively implement the CultNature concept in city planning will be explored.