Oka Palace

The Oka family was known as Yoneya, and it is said that their ancestors came to Tano from Senshu (Osaka) when Lord Yamauchi entered Tosa. They became the most prominent of the wealthy merchants known as the Tano Goninshu, and frequently provided financial support to the domain, allowing them to carry swords under their surnames and to have private audiences with the domain's lord. The Oka Palace was used as accommodation for the domain's lord when he was on alternate attendance tours or patrols in the eastern part of the country. The upper level is lined with rooms for attendants, and a one-room next room runs around it, with a three-foot corridor and a kiri-en around the outside. The tatami room, toilet, bathhouse and all of their furniture have all been perfectly preserved.