Tokorozawa Aviation Memorial Park

This 50-hectare park was established on the site of Tokorozawa Airfield, Japan’s first airfield.
The park is home to a "C-46 medium transport aircraft" that was used by the Air Self-Defense Force, as well as a children's square, a dog run, and an outdoor stage, making it a place that can be enjoyed all year round.
At a tea‐ceremony room “Saisho-tei”, the powdered green tea and Japanese confectionery made with Sayama tea can be enjoyed with a view of a Japanese garden.

* Each facility in the park (dog run, outdoor stage, etc.) has different opening hours, fees and may require advance reservations.
For details, check the official website.