Fuchu no mori park is located near Higashi-Fuchu station of Keio line by 20 minutes only from Shinjuku station.
At this park, there is a Fuchu municipal museum and Fuchu no mori Art Museum, so it would be enough for your visit here as one day short trip from the central Tokyo.
Specially nice spot for the picnic during Sakura spring season, Red leaves autumn season, and BBQ time, so let's enjoy your visit !