The trajectory of glass in architecture reflects the technological evolution of humankind. For centuries, it was a fragile, opaque material, restricted to small openings in churches or aristocratic residences, limited in size, with uneven transparency and a largely secondary role. With the Industrial Revolution and advances in manufacturing processes, this condition changed dramatically. From artisanal and imperfect stained glass, we now have a wide range of architectural applications, from fully glazed skyscraper facades to translucent pedestrian bridges, lightweight roofs, smart partitions, and movable elements. One of the most surprising uses, once thought to be impractical, is the direct interaction of glass with large volumes of water. Today, we see pools with transparent walls or floors that project out from buildings, float above streets, or visually merge with their surroundings, creating striking sensory experiences. A remarkable feat, especially considering that for a long time, glass was considered too fragile for submerged environments.