"Illuminated chrysanthemums" are chrysanthemums cultivated by employing artificial lighting to alter the delivery period. Chrysanthemums with the most commercial value are those taller than 90 cm, and in order to realize this, the flowers are also exposed to light at night to prevent floral buds forming, and artificial lighting is used to simulate the setting sun to extend the length of the stems.
The illuminations that light up the autumn night in the Atsumi Peninsula are the lights from the chrysanthemum farm houses. The light that makes these houses float in the dark helps to create magical scenery.