Facility search system, facility search method, and program for adding area information of a facility by using a place tag of another facility close to the facility

In order to improve the accuracy of a facility search, first adding means of a facility search system adds, to a facility, area information indicating an area when the area information indicating the area where the facility is located therein is input. Second adding means adds the area information to another facility to which the area information is not added when a position of the another facility is included in a region that is based on positions of a group of facilities to which the same area information is added. Facility search means executes a facility search based on the area information added to each facility.