The year of its construction is unknown. It was destroyed in a fire in 1709, and is believed to have been reconstructed around 1715. It is also believed that the Sasunoma was added in the later years.
The Shoin and Sasunoma opened to the public in 2007, and the Sasunoma Garden in 2008. It was a facility that invited visitors to experience the unique layout of a Ryukyuan structure and garden. Displayed within the facility were Wakugi Japanese nails and roof-tiles used in the reconstruction work, as well as structural joints and connections, and stucco walls.

Shoin

The Shoin is the structure that houses a room called the Goshoin where the king conducted his daily business, and the king’s officials were posted nearby. In some occasions, Sapposhi or Chinese investiture envoys, and officials of the Satsuma who were posted in Naha were invited here to be entertained.
Further in the building is a tearoom called Uchironoma which is the back Uraza room of the Goshoin. Here, tea was made and served to guests.

Sasunoma

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  御鎖之間

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  裏御座

Sasunoma was the waiting room for the princes and others, where various officials and guests were welcomed for informal talks in the Osasunoma, a room within the building.
Further in is a tearoom called Uragoza, situated in the back Uraza of the Osasunoma, was where tea was made and served to guests.
Upon completion of the reconstruction work and opening to the public in 2008, the facility offered visitors an experience of the hospitality that the guests visiting the Sasunoma received in the past, by serving Ryukyuan tea and confectionaries.