Senbon means 1,000, and true to its name, here along both banks of the Natsui River you can see about 1,000 somei yoshino, all in bloom in a riot of pale pink blossoms. The trees were planted in 1975 to mark the completion of a restoration project on the river. Promenades have been built for strolling along the five-kilometer stretch of sakura in what is surely one of the most magical walks in the world.