In Tiki 7 we started to move from GoogleMaps (GMap) to OpenStreetMaps, respectively OpenLayers, which offers a GoogleMap layer. Latest since Tiki 13 we are using only OpenLayer (OpenStreetMap) and step b step remove(d) ll code from old MaServer and GMap.Tiki's OpenLayers page
Google Map feature can be enabled through "Admin home > Features > Google Map".
It can be initially set up for the whole Tiki through "Admin home > Google Maps" (tiki-admin.php?page=gmap).
First time, it will recognize that you don't have any Google Map key for your specific web site domain (required), and it will suggest you to request one at:
One you complete the process in the Google site side, yuo can come copy the generated key to the correspongfing field in tiki-admin.php?page=gmap. Once done, you will be able to see your map below, like this: