Iwashina School incorporates traditional Japanese shrine and temple architecture with a touch of Western-style architecture while making use of Namako lattice walls. There is also a karaha-style gable roof, with plaster art decorations by Chohachi Irie. Inside the school museum there is a reconstruction of a school class scene from that period. Completed in 1880, the school building is an architectural masterpiece, and has been designated by the national government as an Important Cultural Property. Iwashina School is one of the best preserved namako Edo buildings in Matsuzaki, Izu.