Fukuoka, Fukuoka

Two shores compete across the water. The Kanmon Strait is the narrow channel dividing Honshu from Kyushu—the seam where Japan's main island nearly touches its southern one—and on a summer night, both banks light up at once: Shimonoseki on the Honshu side, Kitakyushu on the Kyushu side, firing across the strait at each other.

Fifteen thousand shells rise from the two shores, the light reflecting in a busy channel where ships still thread through one of the most heavily traveled straits in the world. The retro streets of Mojiko port glow on the Kyushu side, and across the dark water, impossibly close, the other prefecture's fireworks answer.

There is a geography lesson written in fire here. Two islands, two regions, two prefectures with their own histories and accents and pride, brought together for one night by the narrow water between them. The strait that divides them becomes, under the fireworks, the thing that joins them—a single bright channel where Honshu and Kyushu, for a few hours, share the same blazing sky.

A festival of gratitude, in autumn.

In October, at Kushida Shrine, the guardian shrine of Hakata in Fukuoka, the great autumn rite is held. It is called Hakata Okunchi, and together with the Okunchi of Nagasaki and Karatsu it is one of Japan's three great festivals of that name.

If the summer's Hakata Gion Yamakasa is a fierce festival meant to drive off plague, this one is quiet. It gives thanks for the autumn harvest. An ox-drawn portable shrine moves slowly through the streets of Hakata, followed by a procession of children. In the precincts a harvest market is set up, sweet amazake is served, and a shrine maiden performs the Dance of Eternity.

The festival's origins reach back some twelve hundred years, said to lie in the ancient rite of first fruits. It is an old festival, though smaller in scale than those of Nagasaki or Karatsu—which means it is easy to watch, up close, without the crush of crowds.

The same city, summer and autumn, wears two entirely different faces. Anyone who knows the frenzy of the yamakasa will be surprised by this stillness. It is the gratitude of a harvest season, offered to the shrine the people simply call Kushida-san.

The station is steps away, and Canal City is close. Afterward, walk the old streets of Hakata.