Video documentation can be an important addition to the existing documentation techniques of textual documentation, pictorial i.e. visual documentation, because sound (synchronous to the action as important feature for experience), time specific aspects and perhaps even a residual atmosphere can be shown in a video. Research into video documentation is still almost virgin territory with no clear definitions and is in need for further research to investigate how video documentation could provide insight into the special relations of the installation with the architecture and audience, its movements and interactivity. Also the need for and the level of additional textual information next to the video documentation needs further exploration. Itís a work in progress!