The 3D model of the city of Turin 2.0 is under development by Ultramundum Foundation on order from the City Council, mobility division. This model is derived from 1.0 version, already completed, and will make available the entire city for free interactive exploration on a standard personal compuert, with an extremely high level of realism. The model is completely open source and its Tabulae (elements at the base of the technology used) will be freely accessible and modifiable by everybody. Until today, only portions of a city have been modeled with similar tecnologies, because the data load for a model such this, with undhreds of thousands of buildings, has ever been pohibitive. The Turin 3D model allows for interactive exploration on a standard personal computer with a modern video card. Out-of-ordinary powerful computers are not necessary. Thanks to patented UltraPeg technology, this model offers an interactive flight on all the city with the possibility of descent to the ground level of any single street to walk amont he buildings. Getting altitude the speed increases accordingly to allow for an exploration experience easy and really natural. Every building of the city is present, with highly realistic graphical details. Flowerbeds, as it is visible from the first images of the prototype, have details of the grass and not a simple green surface. Other details will be added, until an extreme level of realism will be achived, with a model whose data load would be of many gigabytes, if produced with classical technologies. Any Tabula, the data structure at the root of Ultramundum Foundation's UltraPeg technology, can hold multiple data types. For the Turin city model, informations on buildings positions, root maps, olympic areas placements and specific schematics have been imported from Autocad files and other databases. The Autocad file importer, called UltraTools, allows for fast and almost automatic acquisition of public databases, converted in a very short time to three-dimensional elements. All these data can then be explored in real-time. The Foundation can arrange interactive demonstrations on request, because this product can not be freely distributed yet.