In attempting to address the heideggerian Seinsfrage, by way of situating it between the platonic conception of ̉όν in the Sophist and of χώρα in the Timaeus, this paper investigates the ontological possibilities that are opened up in terms of rethinking space. Asserting the intrinsic connection between the question of being and that of space, we argue that the maturation of ontology as phenomenology would not unfold in its furthermost potential unless the being of space gets clarified. This state of affairs confronts us with the exacting ontological task to found a theory of space that contributes to an explication of the question of being beyond its associated temporocentric determinations. Consequently, our line of inquiry endeavors herein to constitute a prologmenon to the elucidation of the question of the being of space as “ontokhorology.”