Torrential rain in 1937 destroyed the wooden main building in use until that time, and the rebuilding was completed in 1941.
Approximately 100-year-old Japanese cedar trees, logged at one of the mountains owned by Ichijoh Ryokan, were used as the building wood. The building has three above-ground stories and one underground story, making it a wooden four-story building.
Each floor is encircled with copper plate roofing and railings. The wood-framed glass doors and white shikkui stucco walls on the upper part of the doorways are well balanced and give the structure a unique exterior appearance.
The exterior façade is almost completely free of walls and uses 17-cm square through pillars for its principal structure. Inside the building are crisscrossing bulkheads and walls that form the backbone. This gives the building flexibility and makes it resistant to damage. The triangular unit-trussed shed (axial) frame excels in durability.
The building was undamaged by the 2011 Great East Japan Earthquake, with only some wooden fittings coming loose.
The building is currently used as a Japanese restaurant with private dining rooms for overnight guests.

The Bath Pavilion was built in 1933. It is a wooden two-story structure, with a gabled roof shingled with steel plates.
Like the Wooden Main Building, each floor of this building is enclosed by a hallway and has a total of eight rooms.
The space with wooden beam flooring by the windows of the present ryokan is called a hiroen, and traces its legacy to the encircling hallways which can be found in the Bath Pavilion and Wooden Main Building. In the old days, the guest rooms of Japanese ryokan inns were structured to be entered into from the outside hallways. However, from the Meiji Period (1868-1912), changes began to occur. Visitors from overseas began to arrive, and to ensure privacy, partitions were placed in the outside hallway sections of each room. The entrances were then moved to the opposite side of the rooms. In 1952, the Act on Development of Hotels for Inbound Tourists was enacted to allow visitors from overseas to use the lodging facilities comfortably. The Act sets forth that the hiroen space (the space with a table and chairs) needs to be installed in the guest rooms.
The Bath Pavilion and the Wooden Main Building retain the exterior corridors traditionally seen in the Japanese ryokan buildings in their original state. They are important structures that tell the story of the historical changes in ryokan architecture. The building is currently used as a Japanese restaurant with private dining rooms for overnight guests.

This building is a storehouse called a “kura,” which was used to safely store goods and materials. It was constructed during the Edo Period (1603-1868), but the precise year of construction is unknown.
The method used to build the storehouse was to first raise the support columns, and then, construct the foundation of the walls with ropes made of bamboo and plant fibers. Multiple layers of mud were then plastered on to create the walls, on top of which a finishing layer of hydrated lime was applied. This is called a shikkui stucco wall. As shikkui is difficult to burn, the structure is fire-resistant, and it also excels in protection against moisture.　
The roof has a gabled design shingled with steel plates. At the north entrance is a small roof to protect visitors from the rain, called a hisashi.
The entrance consists of three doors. The first is an earthen door, inside which there are a wooden plank door and a vertical latticework door. The only openings are this door and the earthen window. The openings will be sealed with soil in the event a fire breaks out to prevent the fire from spreading.
The stout support pillars and wooden crosspieces make the storehouse a very sturdy structure. The storehouse was undamaged by the 2011 Great East Japan Earthquake, attesting to its strength.