The glass artwork "Tageszeiten" by Hans Weidmann, located in the stairwell of a former chemistry institute in Basel, presents a quiet dialogue between art, science, and the natural rhythm of time. Created in 1962, its three panels are not merely decorative but are thoughtfully integrated into the building's functional architecture. Each panel features a different bird symbolizing a time of day, arranged vertically to correspond with the changing light as one ascends the stairs. This clever design transforms a mundane academic passage into a subtle, contemplative experience. The artwork's reduced, sober style reflects the building's purpose, suggesting that even in a place dedicated to inorganic matter, there is room for organic reflection on the passing day.