The use of GIS technologies opens up extensive opportunities for research on the aesthetic value of landscapes. The aim of this work is to develop a concept and description of the main functions of GIS, designed to support the study of the aesthetic value of natural landscapes. Testing of functions of the projected GIS is carried out on the example of the South-Eastern Crimea, where earlier one of the authors assessed the aesthetic value of landscapes using polling data. Based on the results of the analysis of stages and the algorithm of their own research, as well as the analysis of other domestic and foreign scientific works on the evaluation of aesthetic properties of landscapes using GIS technologies defined set of basic functions of the projected GIS. The first block of functions is designed for creation of the information basis for the study of the aesthetic value of landscapes. The second block includes functions of assessing the aesthetic value. Depending on the available data, user will be able to choose or independently form an evaluation scale from individual parameters, set evaluation methods and thresholds for each parameter. If the method of evaluation is chosen on the basis of polling data, the system will support the access of experts to the questionnaire and materials for evaluation, as well as the collection and analysis of survey data. Finally, the visualization block will provide a function of visual display of the assessment results, localized in points or in areas. The developed GIS will be able to provide geographic information support at all stages of the study—from the input of the base layers and the selection of control points to the visualization of results.