This study examines the cultural significance of imaginary urban configurations envisioned in turn-of-the-century German utopian literature. Focusing on the relationship between utopian writing and nonfictional discourses (in particular, the newly emerging discipline of urban planning), this study discusses the concepts of ideal urban space proposed in the novels of Theodor Hertzka, Justinus, Michael Georg Conrad, Kurd Laßwitz, and Bernhard Kellermann.