In 1908, he built Nirakuso which was designed by his friend Chuta ITO in Okamoto Station, at the base of Mt. Rokko in Kobe City (Hyogo Prefecture) (Higashinada Ward), and there, he set up a school for special education for gifted children (currently, the department of science in Konan University), the experiment station for horticulture, the meteorological station, the printing house and so on as well as exhibited the collections from his explorations and arranged them.
1908年、神戸市六甲山麓岡本駅(兵庫県)（東灘区）に盟友伊東忠太の設計になる二楽荘を建て、探検収集品の公開展示・整理の他、英才教育のための学校（現在は甲南大学理学部）、園芸試験場、測候所、印刷所などを設置。