We examine the parameters of an “anti-eugenic architecture”—histories, theories, and design practices that counter narrow concepts of human improvement, health, and national belonging. Eugenics was a turn-of-the-century pseudoscience of genetic selection and racecraft that continues to haunt histories of architecture, urban planning, and infrastructural design. We review key histories of eugenics, their manifestations in global modern and late modern architecture and urbanism, and the parameters of alternative practices that foster more complex concepts of human community. Final projects take the form of individual and collective works.