The graduation project, "STAHLstadl: Sustainable Transformation Alpine Hospitality & Landscape” focuses on creating a circular building that aligns with the traditions of the Alps while addressing contemporary environmental challenges. This project seeks to act as an example of a new form of sustainable tourism, while contributing to closing Austria's Circularity Gap. It emphasises the importance of allowing people to enjoy and learn about the unique qualities of the Alps without causing harm, instead giving back to nature through circular and sustainable strategies. The research investigates the application of circular building strategies within the context of Alpine Architecture and sustainable tourism. With the Alps as a historically rich laboratory for experimentation, this study positions the region as a testing ground for circular building methods. Austria’s Circularity Gap, particularly in the construction sector, reveals significant potential for integrating circular solutions to reduce material consumption, improve resource efficiency, and minimise environmental impact. Conducting a combination of literature study, case study analyses and forming strategic frameworks, this research identifies actionable approaches to close material loops, prioritising locally sourced, renewable, and reclaimed materials. The findings demonstrate the feasibility of aligning architectural practices with Austria’s sustainability goals while addressing challenges unique to Alpine environments, such as climate change, fragile ecosystems, and tourism pressures. The research contributes to the broader discourse on the circular economy by offering a regional lens that balances global sustainability objectives with local ecological and cultural contexts. The proposed strategies provide a foundation for architectural interventions that not only enhance the built environment but also promote sustainable tourism practices. This work emphasises the urgency of adopting circular principles as integral components of design processes to create resilient, future-oriented solutions in the Alps and beyond.