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BAZ Blick vom St. Petersturm nach Norden. Hauptbahnhof Fleischhalle Eidgenssische Technische Hochschule exhibition history Institution Baugeschichtliches Archiv Zrich um Blick vom St Petersturm nach Norden Lichtdruck Brunner Winterthur object history Baugeschichtliches Archiv BAZZurich Panorama pdold User Baugeschichtliches Archiv