Michel Foucault’s Of Other Spaces argues that modern life is defined less by linear history than by spatial relations: proximity, juxtaposition, circulation, separation and classification. Against the idea that space is empty or neutral, Foucault presents it as heterogeneous, organised through social divisions such as public and private, work and leisure, sacred and profane. His most influential concept is heterotopia, a real place that stands in relation to all other places while contesting, reversing or suspending their usual order. Unlike utopias, which are unreal spaces, heterotopias actually exist: cemeteries, prisons, psychiatric hospitals, gardens, theatres, museums, libraries, fairgrounds, colonies, brothels and ships. Each reveals something about the society that produces it. The cemetery, for instance, changes historically from a sacred urban centre to a marginal suburban site, showing how attitudes to death, bodies and contamination are spatially organised. Museums and libraries accumulate time in one place, while fairs and festivals create temporary spaces of intensity. Heterotopias therefore disturb ordinary spatial logic: they may juxtapose incompatible spaces, isolate certain bodies, require rituals of entry, or create alternative orders that expose the disorder of everyday life. Foucault’s argument is especially powerful because it shows that space is not merely where social relations occur; it is one of the ways power arranges visibility, exclusion, memory and desire. The ship, described as the heterotopia par excellence, condenses this logic: it is closed yet mobile, real yet imaginative, connected to trade, colonisation and adventure. Ultimately, Foucault makes space a critical problem. To study society is not only to study institutions or histories, but to examine the other spaces through which cultures organise what they fear, idealise, contain and imagine.