1. The System of Tourism Indicators for Sustainable Destinations in Barcelona Province was created to contribute to tourism destination planning and encourage sustainable management. 2. It was designed and implemented through collaboration between Barcelona Province Regional Government, Barcelona University, and the Tourism Council of Barcelona. 3. The system includes a database of 40 tourism indicators, the Index of Tourism Sustainability based on 12 indicators, and adherence to the European System of Tourism Indicators with 27 basic indicators. It provides data and rankings to measure sustainability.