Its always better when you can get into an event free. San Francisco offers an occasional free day to verified residents of San Francisco. Several times a year access to the zoo and Academy of Science , and other city attraction are free to residents that provide a drivers license or utility bill showing a SF City address. How about free access all year? The Japanese Tea Garden in Golden Gate Park allows free access on Monday, Wednesday and Friday from 9AM – 10AM. Enter before 10AM and stay all day. This is available to everyone including tourist.