3D Computer Graphic and Virtual Reality are already widely known and used in scientific research. They are no longer unusual instruments for archaeologists and for those who are involved in Cultural Heritage preservation and divulgation. Below, the assumptions of this archaeological reconstruction of the past will be explained, in particular of some buildings belonging to the archaeological site subject of this publication. The finality of those virtual models and the weaknesses of these kinds of hypothetical reconstructions will be illustrated, too. We must always remember that what is proposed is a hypothesis, and that there could be more than one, because of the lack of information and archaeological data or their incompleteness. The modelling software involved in this reconstruction is Blender, an open source software that has other functionalities and implementations useful for the 3D archaeological models and their real-time navigation. Easy to learn and set up, the Blender Game Engine, could be useful not only for specialists, but also for those who visit those sites and often are not able to comprehend them, because of their wideness and of their peculiar nature of multileveled sites.