Believe it or not, this is the most famous part of Shikoku. Not the bridge particularly, but the narrow straights below it. The town is Naruto and the area is a tourist attraction because of the tide, which is the 3rd most beautiful in Japan, according to our guidebook. This being the exit from the Inland Sea to the Pacific, when the tide changes water currents water flows through at up to 20kph and can create whirlpools. To me, it looked like a river, a big river.