The transition from the Romanesque to the Gothic style in European architecture was not merely a change in aesthetics but a revolution in engineering. Romanesque structures were defined by thick walls, small windows, and rounded arches that supported massive weights through sheer bulk. These buildings felt earthbound, protective, and dark. In contrast, the Gothic movement introduced the pointed arch and the flying buttress, innovations that redistributed weight outward rather than downward. This allowed for thinner walls and the soaring height of cathedrals like Chartres and Notre-Dame. More importantly, it enabled the installation of expansive stained-glass windows, transforming the interior from a somber stone cavern into a kaleidoscope of divine light. This architectural shift reflected a broader medieval theological evolution: a movement away from the view of God as a distant, fortress-like protector toward a vision of the divine as an accessible, luminous presence. The physical lightness of the stone mirrored the spiritual aspiration of the era, reaching toward the heavens with a structural audacity previously unimagined by the master masons of the tenth century.