This project was recently carried out as a part of The Swedish Pompeii Project, which was started in 2000 as a research and fieldwork activity initiated by the Swedish Institute in Rome. The aim was to record and analyze an entire Pompeian city block, Insula V 1. Since autumn 2011 a new branch of advanced digital archaeology, involving 3D reconstructions and documentation methods, was added to the project agenda. The insula was completely digitized using laser scanner technology and the raw data were employed to develop different research activities in the area of digital visualization and analysis. In this context, a newly developed research line was setup with the purpose of implementing the above mentioned dataset into a 3D-GIS platform (ESRI ArcGIS 10 suite). The system was designed with the goal of (i) increasing the connection among the different typologies of data recorded in the last 10 years,(ii) retrieving a larger number of information, and (iii) analyzing data from a fully functioning geodatabase made up of 3D models. First step of the work consisted of the GIS integration of the 3D models (previously acquired with laser scanner technology) of the south house of Caecilius Iucundus, which was used as a case study to make a general assessment of the project feasibility. Each 3D model was transformed into a multipatch feature, and it was associated to an attribute table along with its related information. In this way it was possible to link each feature to the documentation provided by the Swedish Pompeii Project website (http://www. pompejiprojektet. se/). Furthermore, the editing extension available allowed digitizing 3D features straight into GIS, providing with the opportunity to setup even very basic modelling functions. This project allowed us to use all the potential provided by a GIS platform to explore in a GIS the complexity of an ancient building geometry along with its architectural details and peculiarities. Furthermore, a virtual reconstruction of the Caecilius Iucundus house was super imposed alongside the acquired site and used to make comparisons between bottom up and top down representations. The development of this aspect will allow using GIS analytic tools for investigating aspects connected to the cognitive process in an ancient building, with the possibility of generating new hypotheses about the spatial organization of the Roman house based on the notion of visibility of specific elements.