The tourism industry has experienced significant growth over recent decades, resulting in overcrowding and carrying capacity issues in concentrated tourist areas (mass tourism). This influx strains local resources, especially water supply systems, in regions prone to scarcity, such as (semi-)arid and remote areas like islands. Many Thai islands, reliant on tourism, face water shortages exacerbated during high tourist seasons and periods of low rainfall. Inadequate wastewater management further pollutes local ecosystems as untreated wastewater is discharged into the sea, contaminating seawater and groundwater alike. The growth of mass tourism on these islands not only leads to ecological damage but also erodes cultural heritage, as traditional structures are increasingly replaced by modern resorts. My graduation project, “Modern Sala,” addresses these impacts by transforming a site into a recreational space for local residents. It emphasizes environmental awareness through sustainable water management, local material use, and natural integration. Modern Sala seeks self-sufficiency by cultivating food, reusing water, and purifying seawater for safe public swimming, restoring part of the environment to the community. Flexible, multi-purpose spaces adapt to evolving needs, positioning the project as a model for balanced, community-focused tourism development.