Summer Festival 'Oyama DE Donburako' Celebrates Over 30 Years of Tradition Join the unique summer festival 'Oyama DE Donburako,' which offers thrilling river races and fun land activities for all ages on July 26, 2025.

Summer Festival 'Oyama DE Donburako' Celebrates Over 30 Years of Tradition #Japan #Oyama #Dooox #Donburako