To mark the occasion of the groundbreaking of the Kunsthaus Zurich extension David Chipperfield will give a public lecture at the Schweizer Baumuster-Centrale (Building Centre) in Zurich on 8 November. The Baumuster-Centrale is a public institution, founded in 1929, offering a forum for the display and discussion of materials and construction prototypes. The lecture will centre on the design for the Kunsthaus Zurich extension which will face the existing museum building across Heimplatz, a square in central Zurich. In keeping with the centre’s mission, the focus will be on the materiality of the new building.