New sciences have greatly contributed in improving analysis processes and subsequently lead to better understanding of the future. The more knowledge and information are available, the better planning process will be. Furthermore, better data leads to better decision-making. This is the basis of Geographic Information System (GIS). Due to its great ability in processing and analyzing extensive and various amount of spatial data, GIS has solved many obstacles in the research field since it was first launched. GIS plays an important role in the field of tourism planning as it contributes in developing new applications that serve modern touristic. In this research paper, GIS will be used to build an effective system that will improve touristic planning in Lattakia governorate. A spatial database will be created, that includes the most prominent touristic places in the city, such as restaurants, hotels, religious and historical sites.etc. Each of the touristic attractions will be evaluated, and then a tool , created in GIS environment, will be used for weighting roads network, in order to determine the touristic weight for each path in roads network.