Archived Q&A and Reviews
RE: places to take out-of-town kids
The Berkeley Marina might work well for you here. You can fly kites in Cesar Chavez park, and get great views of the bay, golden gate bridge, etc. from there. This is on the right side of the Marina as you are going in; on the left is Adventure Playground (alright for the six year old, but probably too advanced for the 3.5 year old), but there is also some standard play equipment.