*Naha City Museum of History - Historical Documents of the Shô Family Kings of Ryûkyû, including, among many other objects, the only known surviving [[Ryukyu investiture crown|Ryukyuan royal investiture crown]], and [[Chiyoganemaru]], a 15th century sword formerly owned by the royal family. | *Naha City Museum of History - Historical Documents of the Shô Family Kings of Ryûkyû, including, among many other objects, the only known surviving [[Ryukyu investiture crown|Ryukyuan royal investiture crown]], and [[Chiyoganemaru]], a 15th century sword formerly owned by the royal family. |