This was a private residence of a wealthy merchant Soma Teppei, built in 1908. It is located near the Old Public Hall of Hakodate Ward, which was constructed through his generous donation. It is a Japanese-style heritage structure representative of Hakodate. This is designated as an important cultural property of Japan.

Audio-tour devices are available inside the house. You simply touch the device on the audio guidance sheet prepared at each spot and you can listen to an audio guide in English, Chinese and Korean.