01 / Doi Family Residence (土井家住宅)
Townhouse in exterior and layout,farmhouse in its earthen-floored section.

A gable-entrance house facing the Nagasaki Kaidō. The Agency for Cultural Affairs describes it as a hybrid building: a townhouse in exterior and layout, with a farmhouse-style earthen-floored section. Built in the late Edo period (1830–1867), it was originally a sake brewery. It was designated an Important Cultural Property in 1974.
- Late Edo period, 1830–1867 (Agency for Cultural Affairs)
- Important Cultural Property since February 1974 (Agency for Cultural Affairs)
- Dismantled and repaired over 14 months from 1976 (prefecture tourism site)
