A road guide server (1) stores three-dimensional images of intersections included in road information on which images a reference orientation is defined in a three-dimensional image DB. The road information is stored in a map DB of a map data server (2) as information including information regarding roads and information regarding intersections on the roads. The road guide server (1) reads a three-dimensional image of a specified intersection in response to a request from a user terminal (3) connected thereto via a network (9), and generates an intersection guide image by combining a symbol indicating the road to be taken by the user on the read three-dimensional image in accordance with a guide route searched out by the map data server (2) based on the road information. The road guide server (1) sends the generated intersection guide image to the user terminal (3). Upon receiving the intersection guide image sent from the road guide server (1), the user terminal (3) displays the received three-dimensional guide image in a manner that the display orientation of the image can be changed.
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