Seibuen Yuenchi (amusement park) is a good place for families with kids. Seasonal events include swimming pools and fireworks in summer and ice-skating and trout fishing in winter. They also have attractions including Hello Kitty Meruhen Town and character shows such as Precure and Kamen Rider.
Seibu Line Seibu-yuenchi Staiton or Yuenchi-nishi Station
2964 Yamaguchi, Tokorozawa City, Saitama