The museum is huge! We only allotted about three hours for the whole place but you could conceivably spend the entire day there if you truly wanted to see every single exhibit. They do have a lot of extra ticketed exhibits but all the ones included with the general admission are plenty already. This is a really great place to take any kids because there are a lot of interactive things. I clearly had a lot of fun. My main reason of wanting to visit this museum was to get a glance at the Terracotta warriors that they were able to obtain for a limited amount of time.
The next museum we went to was the Museum of Science and Industry. My cousin and travel buddy is an engineering major so it made sense for us to go. They had all sorts of facets of science and it was really cool and also kid friendly so it made science fun. I also did their ticketed Lego exhibit. My brother would have loved that. The Numbers in Nature exhibit had this really cool and very fairytale feeling mirror maze. I really loved just going through the maze. This is another place where you could spend the whole day in as well.
Afterwards, we went back downtown just to take a glance at the beautiful glass decorated domes inside the cultural center. They also had a very eccentric exhibit on the top floor at the time. Afterwards, we simply had to stop by Ghirardelli one last time.
It was sad having to leave Chicago. There were still so many parts of the city we wanted to explore. I'd definitely love to come back, but maybe not during a cold season. I'm not sure I could survive the Chicago winter.