R. Gietl1, M. Kronberger2, M. Mosser3
1 Inst. for Classical Archaeology, University of Vienna, Austria
2 Vienna, Austria
3 Stadtarchäologie Wien, Austria

Archaeological and geological researches in Vienna come to the conclusion that the surface of Roman Vindobona even in the restricted area of the nowadays inner district was quite different in contrast to present Vienna. Beside the cognition of a mutation of the Danube course in a northward direction over the centuries, there are indications in changing the river beds of tributary brooks. A flood of the Danube in ancient times and a mudflow resulting from this flood in the northern area of the settlement entails a chronological division of the site reconstruction. This implicates completely new perceptions on terrain and settlement structures in Roman times. A three dimensional reconstruction of that surface should include the current developments in researching the urban area of Vindobona, that means river courses, elevations and altitudes, routes of streets, buildings of the legionary fortress and the surrounding canabae legionis and the river docksides in reconstruction. Implements in ensuring this intentions are a GIS-application, 3D-studio, altitude and geological plans of present day Vienna and new two dimensional plans of the legionary fortress and of the dimensions of the surrounding canabae legionis. In future the project should be enlarged around the whole area of the Vienna basin.
Key words: Vindobona, 3D-reconstruction, terrain, settlement, GIS-application