Our research addresses the question of how to handle the architectural knowledge in order to provide non-computer science specialists with a tool dedicated to the making and to the representation of archaeological hypothesis. Our approach of the architectural object is based on theoretical analysis and on elements of bibliography connected to specific buildings. Relevant hierarchy of concepts (individual elements of architecture that we call entities as well as relations linking them to one another) are formalised following the object oriented methodology in order to provide each element of vocabulary isolated as non ambiguous with a corresponding theoretical definition. The “Hublot" application we present allows interaction with the theoretical model (create and arrange one's own set of entities) through a web browser in which textual data and VRML 2.0 (Virtual Reality Modelling Language) scenes are linked. This research is connected with the ARKIW POLONIUM co-operation program that links the MAP-GAMSAU CNRS laboratory and the HAiKZ Institute of Kraków's Faculty of Architecture. The field of experimentation proposed is Kraków's Kramy Bogate located on the city's main market square. Formalisation of the theoretical models and web interfaces are JAVA developments