The concepts of frontier, boundary, and border, and consequently of spaces and regions they delimit, have left a persistent mark on the perception of geography, whether expounded in premodern Muslim textual sources, or by modern geostrategists. The ten essays in this volume explore diverse aspects of geographic, confessional, political, and theoretical liminality spanning from Early Muslim Arabia to contemporary Islamic art. In addition to art historians and archaeologists, this volume is of interest for students and scholars of Border Studies, as well as Social and Cultural Studies.