|Address||Innaimachi, Usa City, Oita Prefecture|
|Contact||Usa City Tourism Association, Innai Office|
With settlements and villages scattered all across this deep valley region, Innaimachi is home to 75 stone bridges of all sizes and shapes. As it is known to be one of the most notable stone-bridge towns in the country, stunningly 64 out of the 75 bridges are stone arch bridges. Lighting up beautifully here at night are the four largest overpasses; namely, the "noblewoman of the stone bridges" Torii Bridge, Mikutsu Bridge, Arase Bridge, and so forth.