Exploring the metro

Time to leave HK.. Our flight leaves at 8 in the evening so we have the whole day to explore the city.  One of the agenda is not to leave HK without going to Snoopy's World. 
Based on my friend's description, I thought it is a theme park, similar to Disneyland/Ocean Park. I had a difficult time looking for this in the internet.  When we went there, we didn't know what to expect.  After riding three different trains and getting lost, we arrived at the right station - but we didn't see any sign of Snoopy's  World, what we saw is an entrance to a shopping mall.
After a few minutes walk and help from HK citizens, we found it.  A small park, where little kids can play, quite old.  We spent a couple of minutes taking pictures and went to the mall to window shop. 
We spent the remaining hours window shopping before leaving for the airport.