The project is based on the perspective of viewing the urban as a constructed ecosystem. Taking this perspective, every form of life that contributes to the preservation of a livable and biodiverse environment comes to the fore and is taken into account in the process of imagining, developing and realizing a just and ecological society. A new form of continuous spatial production, energy supply, food production, residing, working and living, research and renaturation will be proposed for a formerly industrially used site in Berlin Rummelsburg with the aim of initiating the development of a social and ecological life practice. According to the vegetation, different areas are defined, which describe the future relationship between man and nature and an appropriate treatment of soil and vegetation. Areas of renaturation where man takes deliberate targeted measures to support nature in the process of wildness, areas of cultivated nature, research beds that analyze and evaluate the cultivation of plants under different conditions, and areas where contaminated soils are detoxified and renaturated through remediation measures. Existing tanks, originally used as water reservoirs, are being converted into the site's energy center. Through solar cells, biogas plants operated in cooperation with the municipal waste disposal, a combined heat and power plant and water tanks, a decentralized energy supply model is proposed that will make the surrounding area mostly independent of large energy suppliers. The Bioshelter, a residential building for about 200 people, proposes a productive, climate-active form of housing in which human and natural habitats overlap. The algae farm interconnects production cycles of aquaponics, algae production, and a server farm in a way that allows for resource-efficient year-round production. The Movement House transforms an existing industrial building into an infrastructure that stimulates and enables formal and informal movement among residents. The research station collects data on the state of the ecosystem, analyzes, evaluates, experiments, tries and maintains. The residents of the area become gardeners of their shared livelihood - people are involved in multiple ways in the processes that contribute to the preservation of the constructed ecosystem.