Interactive image-projection (mirage) onto the glass-facade of Building A3 of the Kreuzbauten (Cross-Buildings) in Bonn. Realized 2015
The property with the two striking Cross-Buildings is a place that expresses the political culture of its era in all its aspects. It marks the beginning of the government district planned in 1967 after the reservation of the provisional federal capital of Bonn was annulled. The political and cultural will of the Bonn Republic can still be seen today in the ensemble of architecture, landscape design and art. From its initial construction, the site’s concept included numerous works of art for all levels of the exterior as well as interior. It is the interaction of the landscaped open spaces with artworks and architecture that gives the property its very particular quality.
The objective this project was to highlight this interaction, to rediscover the concept of the property and its existing works of art from that time. To this end, six adjacent panes of the facade are exchanged for special projection glass. Images are projected onto these panes which, because there is no visible image carrier, appear as actual reflections of their immediate surroundings. The projections feature different views of the site and the coexistence of the various artworks in that architectural environment. Because the design language of the site is uniform and the projected image is not so different from the actual reality behind the viewer, the virtual transport of the image from one end of the property to the window is not at first evident. In addition, the projected image overlaps with the pane’s ability to mirror the viewer standing before it – that is, to integrate the viewer into the image. And upon nearing the pane, its mirrored content begins to overlap with the view into the interior, creating a discrete, yet richly multilayered illusion that sits at the periphery of one’s attention.
The goal is not to deceive, but to create an image that is credible yet also works as a narrative. By exchanging the natural glass reflection in a sequence of projections, a virtual journey across the site can be undertaken. An image archive of the entire site was created, which runs automatically with a change of one image per day. Additionally, an interactive control is built in, allowing one to navigate this image archive by hand movement, thus taking an individual virtual tour of the site at will. Using a camera-supported gesture control function, the images on the facade can be scrolled further by arm movements.
Client: Federal Ministry of Transport and Digital Infrastructure, represented by The Federal Office for Building and Regional Planning (BBR)
Coordination, Execution: The Federal Office for Building and Regional Planning (BBR), Department A2 Berlin and Department IIIB3 Bonn.
Photos: Thorsten Goldberg