Abstract
Web 2.0 applications, now common in the tourism domain, make it easy to share travel-related experiences and opinions, thus leading to the creation of enormous amounts of user-generated content. This type of tourist information must, however, be preprocessed by structuring and aggregating it in order to avoid overwhelming users. In this article we propose a knowledge-based approach that exploits spatial proximity to annotate resources with qualitative semantic concepts for tourism products such as proximity to a lake or opportunities for specific sporting activities. Finally, the article describes the successful implementation of the proposed technique and provides insight into a practical usage scenario.