Millennium Playground

The play train alone makes this place worth the trip — kids lose their minds over it, and honestly it holds up way better than most themed equipment you see at parks around Marin. It’s got a solid mix of slides, swings, a tire swing, and a real climbing structure, so there’s enough here to keep both toddlers and older kids busy without everyone melting down at once. The enclosed layout is a genuine lifesaver if you’ve got a runner, and the shade trees actually do their job on hot afternoons. Throw in BBQ grills, picnic tables, and clean restrooms and you’ve got everything you need for a full afternoon — not just a quick stop. San Anselmo locals know this one fills up on weekends, so weekday mornings are your move.