One does not always have to go far to see great examples of geo-tourism applications. The CityTripPlanner is a personalized tourist guide application that relieves the tourist from the burden of having to plan his trips in advance and based onan overload of available information. The application instantly generates personalized sightseeing tours based on userpreferences and interests. Together with the city of Leuven (Belgium) a prototype of the CityTripPlannerapplication has been launched and can be accessed via http://www.citytripplanner.com and http://www.citytripplanner.be . Currently, thesite is being extended to include other cities in the Dutch-speaking part ofBelgium, such as Bruges, Antwerp, Ghent and Mechelen. This project is backed by the Flemish Government. The CityTripPlanner application is based on extensive, state-of-the-art research performed at the Centre for Industrial Management of the Katholieke Universiteit Leuven. Rating **