Mentioned by Touropia
25 Top Tourist Attractions in San Diego
"The San Diego Zoo Safari Park, located near Escondido, is one of the best attractions in San Diego when traveling with kids. The 1,200-acre zoo has more than 300 species of animals, especially those that are endangered in the wild, concentrating on breeding them and then reintroducing them back into their wild native habitat. Visitors can take a tram tour of the zoo or see it from above via a hot-air tethered balloon."