For Milan Design Week 2026, Heidelberg Materials Italia filled the courtyard of the Corriere della Sera building in Brera with Città delle Idee, an installation designed by Mario Cucinella Architects and printed by Erratic. It was commissioned for the newspaper's 150th anniversary.
The piece is built from roughly a thousand self-locking modules in two sizes and six types, printed from a fibre-reinforced mortar with more than 15% recycled content. Interrupting the flow of material at set points during printing is what lets the pieces lock into one another without extra fixings.
Why it matters to us: it is a clear example of printed concrete used as a kit of parts rather than a single monolith. The same logic sits behind our modular benches and desks, where a large form is split into printable sections and assembled on site.