This paper illustrates the results of the DentroTrento project which promotes historical, artistic and cultural heritage in the area of Trentino through the use of Virtual Reality technologies. The project's goal was to implement an user friendly system which could be used by visitors of an archeological site thus fostering a process of cultural enrichment. The importance of the project, commissioned by the authority for Cultural Heritage, partially resides in the peculiarity of the site's premises, located below a square in Trento among the theatre's foundations. The interface developed allows users speaking different languages to share simultaneously the experience of virtual tour across time.