Yomiuri Land Firefly Evenings

Becoming something of an annual occurrence, the firefly evening events at Yomiuri Land take place in the Seichi Koen area of the park, a specially developed grassland ideal for firefly breeding. At ¥300 per person, it's certainly cheap to get in, though clued-up parents will know the wallet emptying won't stop there. Note that the firefly-watching takes place only on Fridays, Saturdays and Sundays.