Northern Light
Superstar
I think Arc en Ciel - success notwithstanding - offered a case study of why we need to be very careful with public art, given how neglected it was for decades (and still hasn't been restored, despite of multiple promises).
AoD
In this case, I'm not suggesting anything with moving parts or electricity, just better, more interesting/colourful finishes. That should, in theory, be maintainable.
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