Adachi-ku's brilliantly named Park of Living Things brings back its lunchtime firefly-watching event, which takes place on Saturdays and Sundays in June and early July. Observe the magical dance of these symbols of early summer up close, and be sure to take the chance to visit the park's wide range of other displays, including the large greenhouse with dozens of butterflies, a glass tunnel where kids can observe Japanese insects and a corner with tropical fish, reptiles and other animals.
The event takes place from 1pm to 4pm.