Geosites represent important elements of geoheritage for promoting geotourism sustainable practices aimed at education and conservation. The Santa Elena Peninsula Geopark Project has several locations with geological, cultural and historical richness and the potential for geosites and tourist development. However, these places lack infrastructures that improves tourist reception and local geoeducation. In this study, Geotourism Interpretation Centres (GICs) were designed using sustainable and architectural criteria to improve geoeducation and geotourism in geosites of the Santa Elena Peninsula Geopark Project. The work included two stages: (i) selection of the geosites and (ii) design of the GICs. Four geosites were selected for the design: Barrio Ingles Ancon Parish, Manglaralto’s Coastal Aquifer, San Vicente Hot Springs, and San Rafael Mines. A GIC design adaptable to the four sites is proposed based on three zones: recreational–passive, services and cultural. The design prioritises sustainability, considering four criteria: political–economic, social, cultural and environmental. The proposal takes advantage of the area’s natural materials and the natural climatic conditions to offer a space that improves the geotourism experience in mimicry with the environment, promoting cultural roots and community benefit.

Water is an essential element for agricultural sustainability. In volcanic islands, freshwater sources are limited, challenging the local farming water supply. Rainfall dependence in the Galapagos Islands limits continuous agriculture, and despite using natural water sources, their irrigation quality is little known. This study aimed to carry out a control–diagnosis of irrigation water quality of the natural sources of the four agrarian islands of the Galapagos, considering water quality parameters for the proposal of sustainability strategies in the water and agricultural context. The workflow included (i) freshwater supply situation diagnosis, (ii) physicochemical parameters measurement and hydrochemical characterisation, and (iii) irrigation analysis and sustainability strategies configuration. Results indicated that of the 34 sources analysed, 55.88% are suitable for irrigation and are located in San Cristobal and Santa Cruz. The remaining 44.12% showed problems with parameters such as faecal coliforms, salinity, metals, carbonates, BOD₅, and COD above the national permitted limits. Six strategies for water and agricultural sustainability are proposed, including periodic water monitoring, academy–government–community projects, community water board creation, water sowing and harvesting systems, effective management of effluent, and agricultural strengthening. The study guides comprehensive hydric management initiatives to benefit agrarian development and food security, aligning with SDGs 2 and 6.