Yes, it is very beautiful indeed! It can take more than a day if you want to see all the exhibitions or at least go inside these pavilions. I would say one day is just to walk around and see everything from the outside 🙂
It's been renovated recently and there've been added lots of new interesting attractions including one of the biggest ferris wheels. I haven't seen it myself, would love to back and visit again at some point in future 🙂