There are actually a numbere of "hidden" parks in Greenbrae in addition to Creekside. There's also Parkside Park off of Eliseo. Everyone meets on the green behind Bon Air Shopping Center near Cape Marin. The dogs play or go for walks along Corte Madera Creek. There's also Piper Park dog park across the water in Larkspur. All this is very near Kentfield, but in Kentfield you'd use the College of Marin for recreational activities as well as Mount Tam--up on Crown Road. That's a great place to walk dogs! There's plenty to do outdoors---mountain biking, hiking, kayaking, swimming, parasailing are just a few activities to mention.