This project reinterprets urban architecture through a process of spatial inversion, carving Tetris-like voids into building facades. Instead of exposing interiors, these openings reveal fragments of the sky—daylight, sunrise, and night—introducing a temporal dimension within rigid structures. The contrast between dense concrete textures and the fluid sky creates a tension between control and openness. Architecture becomes not just a physical structure, but a system that frames and limits perception. Through photography and digital compositing, the work suggests that the sky we see is not entirely free, but shaped and defined by the built environment.