1. San Diego was earlier named San Miguel by Juan Rodriguez Cabrillo; the first Portuguese explorer to land here. But it was renamed San Diego by Sebastian Vizcaino. 2. Hua Mei, the first baby panda was born in San Diego's Zoo to a pair of giant pandas. She was the first baby panda to be born in the Western Hemisphere since 1990. 3. San Diego enjoys beautiful weather throughout the year with an average daily temperature of 70.5 degrees Fahrenheit (21.4 degrees Celsius). At times, you can experience mountain, coastal, and desert environments all in one day. 4. Legal drinking age in San Diego is 21. 5. San Diego is home to seventy miles of quaint and picturesque beaches. 6. USAâ€™s largest wooden structure; the Hotel Del Coronado is in San Diego on Coronado island. And you need not to shell out huge bucks to find an affordable accommodation in San Diego. You can easily avail economical vacation packages in San Diego and have the experience of a lifetime.