There is a proliferation of large displays, as in public areas as the urban cityscape. Arranging content is critical on wall-sized displays. In this work we investigate how content and devices can be represented using a virtual-spatially-aware technique, specially in wall-sized screens. We propose a method for arranging content and devices on virtual screens and how those virtual screens are mapped to physical screens. We also present a prototype that support the virtual-spatially-aware technique.