上唐子ホタルの里 — photo spot in 832 Kamigarako, Higashimatsuyama, Saitama 355-0077, Japan

Small riverside hamlet famed for summer firefly displays (late May–June). Photograph soft bioluminescent trails over reed-lined streams, villagers' lanterns and reflections. Visit after dusk during peak season; arrive early to find parking and avoid disturbing insects. No flash, be quiet and follow local signage — access can be by short walk from roadside parking.more