Yesterday A thin cast iron column equipped with a stereoscope at eye level is placed on the border area of a small street in the city center. The stereoscopic slide inside it imparts a three-dimensional impression of the section of the street that lies before it; the point in time of the photographic record is preserved.
		Yesterday, realized in Berlin (1988) and Basel Liestal (1990), sponsored by: Ruins of Art Berlin, Palazzo Liestal Basel Land, Switzerland.