Today, the development of a VR application is still a long and difficult task. You need to be skilled in Virtual Reality (VR) technology to be able to develop a Virtual World. There are several technologies like VRML, Java 3D and X3D available to create 3D for the World Wide Web. To be able to develop a Virtual World for the Web, one needs to know how to use these technologies from a programmer's perspective or how to use authoring tools supporting one of these technologies. To ease the use of VR, there is a need to have modeling tools that allow the designer to model his Virtual World much more in terms of the domain expert point of view. In this paper, a new approach called "VR-Wise" for designing and developing Virtual Worlds, is introduced. This approach uses the domain expertise to shorten and facilitate the generation of a virtual world. To do this, our approach uses ontologies. As ontologies are describing a domain or part of a domain, the information contained i...