"Space Matters!" claimed Doreen Massey and John Allen at the heart of the Spatial Turn developments (1984). Compensating a four-decades shortfall, this collective volume is the first reader in Byzantine spatial studies. It contextualizes the spatial turn in historical studies by means of interdisciplinary dialogue. An introduction offers an up-to-date state of the art. Twenty-nine case studies provide a wide range of different conceptualizations of space in Byzantine culture articulated in a single collection through a variety of topics and approaches. An afterword frames the future challenges of Byzantine spatial studies in a changing world where space is a claim and a precarious social value. Contributors are Ilias Anagnostakis, Alexander Beihammer, Helena Bodin, Darlene L. Brooks Hedstrom, Beatrice Caseau Chevallier, Paolo Cesaretti, Michael J. Decker, Veronica della Dora, Rico Franses, Sauro Gelichi, Adam J. Goldwyn, Basema Hamarneh, Richard Hodges, Brad Hostetler, Adam Izdebski, Liz James, P. Nick Kardulias, Isabel Kimmelfield, Tonia Kiousopoulou, Johannes Koder, Derek Krueger, Tomasz Labuk, Maria Leontsini, Yulia Mantova, Charis Messis, Konstantinos Moustakas, Margaret Mullett, Ingela Nilsson, Robert G. Ousterhout, Georgios Pallis, Myrto Veikou, Joanita Vroom, David Westberg, and Enrico Zanini.