Sayama Park
Spread out below the dam of Lake Tama, with a pond, a playground with swings and a sandpit, and a cycling path that loops all the way around the reservoir.
How kid-friendly is it?
Nearby places
More than 160 hectares, with a cycling course, bouncy domes in the children's forest, and a lawn about the size of two Tokyo Domes.
Historic Tokyo buildings rebuilt on one site, with a 1929 bathhouse you can walk into, a street Spirited Away's artists drew on and an old streetcar to board.
There's a big concrete slide and a Tarzan rope in the play plaza, plus a bouncy dome, an artificial-turf sledding hill and a C57 steam locomotive.
Colorful play equipment, a water play area, a cherry-lined promenade and the city art museum on the grounds, with woods for acorn hunting.
Wide lawns along the Nogawa river, a nature garden with its own visitor center, and a free athletic course with wooden play equipment.
One big grass field on the site of an old aircraft factory, plus a play equipment area.