For some time, Luxembourg's southern region has been undergoing a continuous change of structure. The era of the iron and steel industry is steadily declining. To this day, exhausted ore mining areas, former production sites as well as spoil heaps and stockpiles shape the landscape. These fallow areas represent great potential for future development. There is an increasing demand for building land and an urgent need for new locations. Esch-sur-Alzette is the center of the southern region and, with a population of 33,286 inhabitants, the country's second city. In the 19th and 20th century, three production sites where developed in the city, causing deep-going changes in the townscape. This thesis is based on the pilot project Belval West; a first attempt of proposing ideas for revitalizing industrial wasteland. With an area of 222 hectares, ArcelorMittal Esch-Belval is the largest steel plant in Esch-sur-Alzette. In steel production, blast furnaces are being superseded by electric arc furnaces. The industry site is divided in Belval East and Belval West; the western part will be shut down. Gradually, this 120 hectare fallow area will turn into a new city quarter. 102 hectares of Belval East remain active; to this day the site produces steel under the direction of ArcelorMittal. This diploma thesis documents the challenge of possible city planning for the commune Esch-sur-Alzette. Its aim is to develop a future vision, which utilizes the Belval East area as an extension area. At present, the still active steel plant represents a physical barrier between Belval West and the core city. Closing down the entire plant would be beneficial for the urban evolvement of the commune. The conversion will create new residential and living space for the public. Primarily, the focus will be on establishing new long-term job sectors as well as leisure and recreational facilities.