This city has no shortage of elaborate play spaces.
This sunny, lively park that's so popular for weekend picnic revelry is also home to the massive, $3.5 million Helen Diller Playground, complete with chimes and drums, a 45-foot slide and gorgeous views of the San Francisco skyline. It also has a sand play area, swings, suspension bridge and boulders to climb. The playground is part of a $20 million renovation that brought bike racks, upgraded tennis and basketball courts, bathrooms and free Wi-Fi to the 14-acre space, which can attract up to 10,000 people on weekends. Be sure to get an ice cream cone at the nearby Bi-Rite Creamery.