Most tangible cultural heritages have a location so they can be expressed and managed as geographic information. The Geographic Information System (GIS) is used for the preservation and management of cultural heritage. In Korea, it has been established to provide users with location information and specific data on cultural heritage. In this study, the characteristics of the Heritage Geographic Information Service (HGIS) in Korea were identified, and problems and development directions were presented. In Korea, HGIS services have been provided to preserve and manage cultural heritage since 2008, and many users are using HGIS services for the preservation and management of cultural properties. To improve and develop HGIS, the measures proposed in this study are as follows. First, the data provided by HGIS must be refined and processed to provide user-centered information. To this end, it is necessary to improve the data schema and develop integrated metadata. Second, it is necessary to provide various map expressions of the spatial distribution of heritage. The theme map expression should be improved to effectively express the spatial distribution of heritage even on a small scale. In addition, it is necessary to combine high-resolution satellite images and 3D building modeling to effectively express heritage even in virtual reality. In this study, an improvement case of the method of map expression of heritage was presented using Python's Folium and Google Earth.