This thesis focuses on the adaptive reuse of obsolete historic water infrastructure in the Dutch Polder landscape. It examines how these heritage structures can be reimagined to effectively serve contemporary social, cultural, and environmental needs. The goal of this research is to guide the development of an adaptive reuse project in this context. For this reason, the thesis consists of two parts: research on adaptive reuse of obsolete water infrastructure, and a practical design proposal that will apply the research findings on a real-world adaptive reuse project of a water heritage site: the pumping station Middelpolder in Amstelveen, the Netherlands.

First, the research uses a qualitative multi-method approach, by combining case studies, literature review, expert interviews, and public engagement. The framework by Vafaie, Remøy, and Gruis (2023), which defines ten success factors, is applied to perform an in-depth analysis of three existing reuse projects of water heritage in Dutch polders: DIJK, De Breek, and the Concertgemaal. Common elements across these cases include hybrid governance models, minimal and reversible architectural interventions, and a strong emphasis on public-facing (educational) programming. At the same time, each project dealt with challenges such as structural issues, financial feasibility, and regulatory complexity.

Secondly, this thesis further develops the concept for Atelier-Café Het Gemaal, a real-world reuse project in Amstelveen that integrates a café, creative workspace, and nature education hub in an obsolete water pumping station in the heart of the Middelpolder. This practical application is guided by the synthesis of patterns and insights from the data analysis. The project demonstrates a strategy of adaptive reuse that can reinforce cultural identity, local heritage, and promote community engagement while preserving the authenticity of a historic and monumental water pumping station.

To conclude, the research offers a series of reflections and recommendations for professionals in the fields of planning, heritage, and spatial development. The importance of phased implementation, platforming heritage as a design strategy, and building collaborations between public and private sectors are some examples of the recommendations. By connecting adaptive reuse to broader efforts in sustainability and circular economy, this research hopes to add a meaningful voice to ongoing academic conversations, as well as in the professional field of adaptive reuse of heritage buildings.