Imagine an acoustic concrete panel pierced with large interconnected cavities, which not only absorbs urban noise but also contributes to biodiversity by providing a perfect habitat for small vegetation and pollinators. BioMatrix is exactly that — an emerging concrete product developed by Vasily Sitnikov, a post-doctoral researcher at the chair of Digital Building Technologies, ETH Zurich. Essentially, BioMatrix is a foam-like cellular solid, like wood or trabecular bone, however, scaled up several hundred times. At this scale, it begins to resemble the shapes of naturally eroded limestone of karst formations, and even intricate coral’s openwork of calcium carbonate. The advantage of BioMatrix is the control over the topology and geometry of the cavities, as well as the chemical properties of the mineral composition it is made of.