Its representative buildings, Koshoin, Chushoin, Gakki no ma (a room where musical instruments were stored) and Oyagoten, are built in the Shoin-zukuri style in the form of ganko (lining up shoulder to shoulder like flying geese).
代表的な建築物は、古書院、中書院、楽器の間、親御殿と雁行して建てられた書院造りの様式をとっている。