Spanning 100 acres in Balboa Park, the San Diego Zoo is not only one of the largest zoos in the country, it's also home to one of the ... passes are also available. No reservations are required.
U.S. News Insider Tip: Visit early in the morning or on a weekday to avoid crowds. If you walk from north to south, add on a visit to The Standard Biergarten or the vibrant Chelsea Market for ...