The approx. 2,149 square meters walk-through garden with a dried pond and water-spring in front of the western style building and the Japanese style building was designed by seventh Jihe OGAWA (Ueji), and stone lanterns and iron wells in the Azuchi-Momoyama period was brought here from Kameyama-jo Castle.
洋館と和館の前に広がる650坪の枯池泉回遊式庭園は七代目小川治兵衛（植治）の作庭で、安土桃山時代の石燈籠や鉄製井筒などが亀山城から移設されている。