1. An information processing system comprising: a client that executes information display processing; and a server that creates a display structure description file applied in the information display processing, wherein the client acquires image data reference information as access information for image data stored in a storage unit within the client and transmits display structure description file creating data including the image data reference information to the server, the server creates the display structure description file for displaying map information, which corresponds to the display structure description file creating data received from the client, together with image data designated by the image data reference information and transmits the created display structure description file to the client, and the client executes processing for displaying a map on a display unit on the basis of the display structure description file received from the server and acquiring image data from the storage unit within the client on the basis of the image data reference information recorded in the display structure description file and then displaying the acquired image data on the display unit.