What to Do in San Francisco:- San Francisco may only be 7 miles long, but it is jam-packed with a variety of attractions that are sure to appeal to adventurers, foodies, and curious travelers of all ages. A trip to Alcatraz Island to tour the infamous and now-closed federal prison should be high on your list of must-dos in addition to seeing the Golden Gate Bridge. If you want to see a more genuine side of San Francisco, avoid the touristy Fisherman's Wharf and take a stroll through the lively Castro or grab a bite at the Ferry Building Marketplace. San Francisco has a lot to offer outdoor enthusiasts and nature lovers, whether they prefer to hike up Twin Peaks or stroll through Golden Gate Park. On a city tour with a guide, you'll probably visit these popular locations as well as more.