Due to time pressure by the ongoing construction work time-consuming, conventional documentation on site was resigned. Instead, the walls of the Augustinian-tower and the profile of the moat were documented photogrammetrical by stereo measurement cameras (Zeiss SMK SMK 40 and 120) and a medium format camera (Hasselblad 553ELX). The control point measurement enabled the rectification of photos and creation of orthophotos and drawings.