I agree with Charlee. Zoo is a must. When I lived in San Diego, I went to the zoo at least once a month. At the time, they also had a great petting zoo for kids. Think that has gone away. Have great pictures of my daughter, two at the time, with baby monkeys, elephants, lamas, girafes, etc. Don't know if you can really see everything properly in one day. All this is assuming you are an animal person. For me, it was awesome!!