Once merely a “neutral boundary,” the historic glass of the Liebling Haus—marked by subtle distortions, bubbles, and wired textures—reveals its material presence. These imperfections hold memory, tracing shifts in technology and craftsmanship while reminding us that glass, endlessly recyclable, bridges past and future in architectural preservation.

When historic buildings are damaged, the word “repair” hardly seems adequate. Can we ever truly restore something that carries layers of...