To provide a navigation device displaying a POI icon so that an installation actually recognized by a user agree with an installation recognized on a map, and also to provide a map display method.

In the cases where a complex facility 300 exists in a facility (c1), with the complex facility 300 being a master facility including facilities 301 and 302 as slave facilities, and POI icons 320, 321, and 322 denoting the facilities 300, 301, and 302, respectively (c2) are defined, only the POI icon 320 denoting the master facility 300 is drawn on a map image 31 out of the POI icon 320 denoting the master facility 300, and POI icons 321 and 322 denoting the slave facilities 301 and 302, according to a definition of a facility master-slave relation corresponding to the respective POI icons included in map data.