Canton Tower, Guangzhou, yes yes yes it certainly is worth the visit. Fantastic viewing platforms on different floors. The Bubble tram offers a different viewpoint without the hectic crowds. Warning though. Even though public is spaced out over time slots the queues for tram are long. We tried a different approach this year. We went up at 4pm did lots of sightseeing in day time then hung around to catch sunset. We could have waited a little longer to get the night sites with all the brilliant illumination on buildings but we were hungry. Next time we will try the rotating restaurants up Canton Tower on the 106 floor