1. A communication terminal comprising: a memory configured to store therein predetermined-region information for indicating one or more predetermined regions in a pre-stored spherical panoramic image, which is configured to appear disposed on an inner surface of a virtual sphere when viewed, and thumbnail identification information for identifying one or more thumbnails for the one or more predetermined-region images indicated by the predetermined-region information, in a manner corresponding to each other, wherein the predetermined-region information is created by at least one other communication terminal which also stores the spherical panoramic image; and circuitry configured to control a predetermined display to display each of the one or more thumbnails corresponding to the one or more predetermined regions separate from and smaller than a display region in which the pre-stored spherical panoramic image is configured to be viewed or navigated; and accept a selection of a predetermined thumbnail out of the displayed one or more thumbnails; wherein the circuitry controls, based on the thumbnail identification information of the selected thumbnail, the display to display the predetermined-region image indicated by the predetermined-region information corresponding to the thumbnail identification information, wherein the predetermined-region information is created based on inputs received at a plurality of other communication terminals which also store the spherical panoramic image and the predetermined-region information is used by the communication terminal to extract a predetermined region from the pre-stored spherical panoramic image for generation and display of image data corresponding to the extracted predetermined region without receiving separate image data for the extracted predetermined region from an external device, wherein the memory stores therein image identification information for identifying the spherical panoramic image and related information related to the predetermined regions, in a manner corresponding to the predetermined-region information, the circuitry accepts a selection of a type of predetermined related information that pertains to creation of each of the predetermined-region images, which is separate from creation of the spherical panoramic image, the type of the predetermined related information is a specification date of creation of a predetermined-region image and a name of a user specifying a predetermined-region image, the circuitry filters the predetermined-region information such that the circuitry controls the display to display only the one or more thumbnails for one or more predetermined-region images indicated by the predetermined-region information corresponding to the selected predetermined related information, in the spherical panoramic image identified by the image identification information corresponding to the selected predetermined related information; the circuitry accepts the selection of the predetermined thumbnail out of the displayed thumbnails after the filtering of the predetermined-region information; the circuitry controls the display to display the predetermined-region image indicated by the predetermined-region information corresponding to the selected thumbnail.