In this research, VR BBS was developed. In this system, a user can post a photograph with a comment from cellular phone. And the users can see and reply to the photograph and comment by using common BBS on the cellular phone and PC. In addition, the user can also use BBS function in the virtual world. In this study, an immersive projection display was used to experience the virtual world. The virtual world is constructed by placing the photograph images at the position measured by GPS function of the cellular phone. In the virtual world, the user can see photographs and comments on the maps, and reply to them while walking through the world. This system enables users to share information mutually using the cellular phone, PC, and immersive projection display. This system also has a feature that the virtual world would be automatically extended when many users use this system.