San Diego Zoo is definately a world class zoo. It has the best variety of animals in the United States and is very well maintained. The zoo grounds are very large, and requires lots of walking so it may be difficult with a young child, but I suppose you need all that space to house all the exotic animals. Even the plants and flowers were well-maintained and enjoyable to look at. The children's garden is a nice place to rest and pretty to look at. The price for the ticket is pretty hefty, but worth it if you are in the are.
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