The accompanying beauty when a sewer cover is designed with care to afford draining through its exterior. Consider what this says about its context’s behaviors around waste disposal/cleanliness, and emphasis upon aesthetics balanced with functionality (rather than the elevation of one over the other).
Consider the context for this ashtray (the train station platform, also in Lucerne, Switzerland). What does its physical form tell you about how its creators anticipated it would be used? How does this compare to other public ashtrays you’ve seen, in terms of its aesthetics/functionality balance?