The municipal lake in Horn (Austria), established 150 years ago, was originally used for swimming, ice production, and as a fish hatchery. Over the years, its functionality expanded to include boating, ice skating, cultural events and even a seasonal restaurant. However, despite its social significance, the site fell into disrepair, with limited accessibility and dilapidated equipment, making it a particularly challenging area for elderly and disabled visitors. The redevelopment project aimed to offer year-round access to the restricted bathing area, providing inclusive spaces for sport, culture and leisure, and improving the area’s ability to withstand climatic changes. It also introduced spacious wooden platforms for easier access to the water, a 100-metre swimming lane, and sunbathing areas. A stage was added to the lake for hosting cultural events, as well as green spaces, water features and light materials to help reflect the heat during summer. Finally, semi-permeable surfaces were incorporated to help retain water and promote sustainability throughout the site.