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Arctic temps create a delightfully chilly atmosphere in the world famous San Diego Zoo. In more active moments, the polar bears swim right up to you at an underwater viewing window. The tiger triplets, young giant panda and baby giraffe are irresistible. The well-respected zoo, in Balboa Park, was an early proponent of naturalistic, cageless enclosures.
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| Kevin Schafer/Corbis |
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