Given the growing importance of modern technologies and the increasing opportunities for access to information, the question of the meaningful and attractive online presentation of cultural heritage sites is becoming more and more relevant. In this sense, the aim of the study is to evaluate the visibility, content and visual presentation of the immovable cultural values of national importance in Stara Zagora district based on the available information about them on various websites. Through an analysis of the discovered information, the main types of sites that are presented and promoted are identified. The quality of the disseminated information and its ability to satisfy specific demands, as well as the main social groups to which it is addressed, are researched. Basic guidelines for improving the online presentation and promotion of the research sites are derived.