San Francisco
Yes, it's true that San Francisco is one of the most popular cities for tourists in the US, but city residents need getaways too. Since San Francisco and much of the East Bay are densely populated, trips to get out in nature are popular. Similarly, trips that let you slow down from the pace of city life or give you space to move (especially important for kids) are appealing. Whatever your motivations, there's an embarrassment of riches nearby.