The use of 3D models in the field of archaeology and cultural heritage is focussed on in this research. These 3D models are generated through highly accurate acquisition techniques such as photo modelling. To improve the quality of the models, platforms for aerial photography are deployed (e.g. unmanned aerial vehicles or helium balloons). After georeferencing, the 3D models can be applied for several purposes: monitoring archaeological sites, building a 3D cultural heritage inventory, disseminating information to the general public,... In this respect, the development of a 3D (or 4D) GIS with extensive query possibilities would provide various benefits. The determination of a suitable geometric model for the implementation in a 3D archaeological GIS is the central topic of this research.