Shanghai’s Houtan Park demonstrates a successful ecological transformation of a former polluted industrial area. Completed in 2010, the park now functions as a thriving wetland, actively purifying the surrounding river water. The innovative design incorporates recycled materials, reflecting a commitment to waste reduction and honoring the site’s local history. Beyond aesthetic improvements, Houtan Park provides crucial environmental benefits, including carbon sequestration and the restoration of local wildlife populations. The park also serves as a model for managing urban flooding through natural infrastructure. This project highlights how urban spaces can be reimagined to create both environmental and communal value.