Leo J. Ryan Memorial Park

Lagoon-side hotel with an indoor pool and hot tub, two on-site restaurants, and an outdoor shopping center next door - low-effort family logistics.

Newer extended-stay hotel where every suite has a fully equipped kitchen, plus free hot breakfast and free parking - easy for feeding picky eaters on your own schedule.

All-suite extended stay with full kitchens (bottle-warming and snack math solved), free hot breakfast, an outdoor pool, and listed 'Activities for Kids'. Good base for multi-day Peninsula stays.

Chain brewhouse at Bridgepointe with a big kids' menu (mini burgers, mac 'n' cheese, mini corn dogs) and a high-energy, family-friendly atmosphere where kid noise blends in.

Neighborhood park with a small sandy beach on the Foster City lagoon, a children's play area and picnic tables - a rare sand-and-water spot for kids in Foster City.

Foster City's biggest park (about 24 acres): children's play area, ball fields, picnic spots and waterfront views - room for the whole family to spread out.