Miller-Knox Shoreline is a nice little park for riding with the kids. Often windy, but great views. The main trail circles a little lake and it's pretty much flat all around the 1/2 to 3/4 mile.
Ferry Point on the left of this panoramic was the western terminus of the Santa Fe Railroad. It was a busy landing point for rail barges trans-shipping oceangoing cargo from San Francisco up until the 1930's or 40's when the SF Bay Bridge was completed, and the landing point for Marin county ferry service up until the mid 1950's when the Richmond San Rafael bridge was completed.
That's Angel Island to the left on the horizon, with the top of the Golden Gate Bridge north tower just to the right of the island.