1. A pedestrian route guidance apparatus, comprising: a database configured to store map data including road network data and landmark data; a route search unit configured to search for a route from a departure point to a destination point from the road network data stored in said database; a road pattern analysis unit configured to analyze a route pattern of the route by referring to the road network data, and to obtain road pattern data as the analysis result; a landmark selection area decision unit configured to determine a landmark selection area for route guidance along the route based on the road network data and the road pattern data; a landmark selection unit configured to select landmark data included in the landmark selection area from said database; a route guidance information generation unit configured to generate route guidance information of the route using the road pattern data and the landmark data selected by said landmark selection unit; and a presentation unit configured to present the route guidance information.