Maps have been supported in Tiki since 2003 (which is why some call it a GeoCMS). There is geo-related info in various places (users, trackers, image galleries, articles, blog posts, etc.). This was originally done using MapServer, an active and powerful FLOSS mapping solution. However, it requires a dedicated server and more importantly, access to map data (which is not easy). MapServer in Tiki was not maintained since 2004. This likely was influenced by the fact, that Maps integration in Tiki over times moved to GoogleMaps (GMap) in favor to MapServer. Further on we moved from GMap to OpenLayers / OpenStreetMap, which is the base for Map integration in Tiki ever since.Tiki's OpenLayers page
Read first Maps Install and then proceed to configuration.