A map display system has a terminal device having display means for displaying a map image and also has a route search server having a POI database. The map display system has operation/input means for performing predetermined operation on an object image including a POI category or POI information, object image operation detection means for detecting operation on the object image, and POI search means for extracting the POI category or the POI information from the operated object image and searching for a POI while referring to the POI database. The display means displays on a map image the POI searched by the POI search means.