Virtual Reality offers always new options for studying and promoting Cultural Heritage and even decision-making processes. In order to reach better results, a modular development is mandatory. It enables to envisage constraints and requirements suggested by the partners of the project, by the users and to manage the limited financial resources. Applications can be manifold and, starting from one kind of implementation, many others can be performed, adding in time new interactions and functionalities. The ViSMan software is based on a new paradigm in order to meet these needs and it is nested into a working methodology capable of enhancing a new creative approach to Cultural Heritage applications.