Comment by usrusr

Some of my favorite examples of graceful aging in architecture are concrete - but those are never the ones that celebrate efficiency, they always have some playful element that will still be playful when the newness has faded. Ribbed concrete (if you don't know what that means: worth googling!) alternating with smooth surface for example. But sure, once the structure reaches a certain size threshold, you better play the "glass & steel" card a lot, it has been dominant for almost a century for a reason. But even that can be overdone and concrete exposing aging can be a nice contrast.