Nowadays, a great interest in historical installations like museographic devices in international museological studies (capable of giving space form during user communication) is largely attributable to new techniques of immediate communication. Tools and libraries for virtual, augmented, and mixed reality content have recently become increasingly available. Despite its increased cost and investment, these are new ways for increasing visitor presence in museums. The purpose of this paper is to describe the potential of a tourist/archaeological application suitably developed and implemented by us. The application was developed in Unity3D and allows the user to view cultural heritage in a virtual environment, making information, multimedia content, and metrically precise 3D models available and accessible (obtained after a phase of reducing the mesh border), useful for obtaining good 3D printing reproduction. The strengths of our application (compared to the many already in the literature, which are also used as research ideas) stem from the possibility of using and easily integrating different techniques (3D models, building information models, virtual and augmented reality) allowing the choice of different 3D models (depending on the user’s needs) on some of which (again depending on the application needs) were tested and performed simplification and size reduction processes, to make the application loading phase faster and the user experience easier and better. Another application cue was to finalize an application to relate the elements of the museum with some archaeological elements of the territory according to historical period and element type.