Lipik is the spa garden in Slavonia inCroatia known for its thermal healing water since Ancient times. In the 19th century, the park is mentioned as the first iodine bath in Europe. The spa complex began to take shape from 1820 to 1850. The most important plan of the park dates from the end of the 19th century, it is kept in Zagreb, and it is one of the few preserved original plans of historic gardens in Croatia. The plan shows a visible composition preserved to this day and consists of two design forms: historical geometric gardens in front of the main facades of the building and a late romantic landscape park composition (Obad Šćitaroci, 1992). The cadastral plans from 1901, 1913 and 1915 and the dendrological plan from 1994 are also of great importance. In addition to historical cartographic material, modern plans were also used – topographic map and DOP. The area of the park is divided in three parts. This work covers the hospital (northern) part of the area of 3.4 hectares. The cultural-historical and landscape- botanical values used to be dominant and perceivable characteristics of this part of the park (Obad Šćitaroci, 1993) but today they are lost together with many original features and for that reason a complete restoration is needed. The garden is protected as a cultural and historic urban ensemble of the town of Lipik. The thesis presents a method for the renewal of the historic spa garden in Lipik applaying GIS technology. The GIS database was created using data from previous research and projects, available cartographic bases and fieldwork research. From the created database, various analysis were presented and thematic maps related to trees and park composition. Created (GIS) spatial databases are a framework for the analysis and assessment of the interrelationships of different park entities. The results of the analysis and comparison of historical and contemporary plans are new layers with a new database. The final result is a new thematic map, showing 120 years back changes. The GIS model enables simpler, faster and more accurate data visibility, insight into the current situation on site with the possibility of conducting analysis and updating the database, thus providing the basis for quality renewal planning. The importance of GIS is reflected in the development of spatial analysis, visual simulations and 3D models in order to better represent the complex park changes and their consequences. Despite its wide availability, GIS is underused in the area of restoration of historic parks. The potential of GIS is often still overlooked, although it is recognized as a useful tool for mapping, spatial analysis and planning.