When: Mid September - Mid October Dates: 20th September - 20th October (2019) City: Beppu Website: Yoru Umi Jigoku (English) Description: Each year, Beppu hosts this beautiful illumination event at one of its main tourist spots, Umi Jigoku ("Sea Hell"), one of the Seven Hells of Beppu. Usually famed for its turquoise-blue water like that of a tropical beach, this area becomes shrouded in clouds and mysterious lights as it tells the story (via projections) of a small oni searching for a club to call his own. With various illuminations including coloured lights in the trees, projections on the steam, small lights flickering like blue fireflies on the rocks, and the beautifully illuminated field of water lilies, this is arguably one of Beppu's most visually striking events of the year.