I was in China last week for some meetings/lectures and had the opportunity to visit the Giant Panda Research Station in Chengdu, Sichuan Province. This was my first time there, and it is an impressive facility. I must have seen at least 20-25 Giant Pandas, ranging from the very young to adults. The animals were mostly individually housed in large enclosures that mimicked their natural habitats. The entire station was large enough for me to wander around for more than a couple of hours. Here's a picture of me with several adult Giant Pandas in the back.
Of course, also lots of air pollution in Chengdu, mostly because of vehicle emissions and coal use.