Melodies in Motion clocks by Seiko and the Rhythm clocks are simply magnificent. I first became aware of these clocks at Disney World while visiting the Japanese pavilion in Epcot. There was a section of the wall with clocks, and when the hour struck they went into well choreographed movements with the faces of each clock opening with the parts of the faces moving in synchronized maneuvers. After a short time the clock faces went back to their original arrangements. Each clock performed a different set of movements. Some of the more elaborate clocks had other parts that also went into motion.
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Many have a night mode.
Wow! These musical motion clocks are just amazing. I especially like the first one, and see that it has a light sensor so that it will silence itself when it's dark. That's really cool.