Why the Best:
San Diego Zoo is one of the most famous zoos in San Diego, CA. The International San Diego Zoo Wildlife Alliance operates the Zoo. San Diego Zoo is a 100-acre (40-hectare) national wildlife sanctuary home to approximately 3,500 rare and endangered animals representing over 650 species. The Zoo also has a world-renowned botanical collection of roughly 700,000 exotic plants. It serves over 250,000 member households and hosts 130,000 children annually. Zoo Global is the world's largest zoological membership organization. Visitors can discover the wonderful animal world in this Zoo through adventures at the summer camp. The Zoo provides disabled visitors with special parking, restrooms, and access to shows, tour buses, and displays. San Diego Zoo also offers the Go San Diego Pass, an all-inclusive attraction pass with free admission.