Abstract
This paper introduces a modular simulation testbed developed for decision support in logistics and urban planning within the tourism sector, specifically applied to Şanlıurfa, Turkey, as part of the GeostaloVR project. The testbed integrates tourism value chains, urban development processes, and mobility flows to facilitate scenario testing and evaluation. By incorporating real-world data, the simulation framework enables the analysis of key performance indicators for sustainable urban tourism development. This approach aims to advance the application of modeling techniques to address complex challenges in urban tourism in order to provide valuable insights for stakeholders involved in urban and logistics planning.