A must-stop on our family's California vacation was the San Diego Zoo. This zoo is one of the few zoos in the world with open air exhibits designed to look like natural habitats. If you are planning a San Diego visit, don't miss out on a chance to go to one of the best zoos in the whole world. My kids are still talking about our trip to the San Diego Zoo! We were first in line when the Zoo opened and started our day with the Guided Bus Tour. ...