When a subject is a real estate property or the like, it is convenient for a user who looks for a property using the internet if it is possible to view a full-spherical panoramic image at 360?instead of a partial image of the subject. Thus, a business operator (administrator B) who provides property information to the user (user B) has a need of desiring to provide the full-spherical panoramic image to the user looking for the property. However, an application configured to view the full-spherical panoramic image is not necessarily installed at the user' s PC. An image management system 5 not only transmits image data but also transmits a view script of a full-spherical panoramic image to a communication terminal 3b (S9) when data of the full-spherical panoramic image is requested from the communication terminal 3b of the user B.