“Hormonorium” is a proposal for the design of a new public space. It is based on the disappearance of the physical boundaries between space and the organism, as revealed by biology and the neurosciences. Going beyond visual and metric mediation, establishing a continuity between the living and the non-living, “Hormonorium” opens up to the invisible, to electromagnetic and biological determinations. Understanding the physicochemical mechanisms that govern organisms brings about a change in how we understand space, and thus in the way we inhabit the environment.