Guida
The Kosai-ke Residence is a historically significant house designated as a National Important Cultural Property, located in the remote Oku-Iya area of Miyoshi City, Tokoshima. This residence is a profound example of the unique architectural styles that developed in the Iya region, specifically reflecting the characteristics of small-scale traditional dwellings. The exterior is particularly striking, featuring a thick, heavy thatched roof and a unique structural technique called 'Hishagi'—where split bamboo is used to cover and protect the mud walls. Another fascinating element is the placement of the front toilet in the center of the building's front, a layout that reflects the lifestyle and social customs of the era.
This residence has a rich history; it was originally relocated to its current site from a different location than the present-day Higashi-Iya Sugao settlement. The architectural style serves as a textbook example of the typical small-scale dwellings that were once common in this mountainous region. Every detail of the building reflects the ingenuity and wisdom of the people who lived in this harsh, high-altitude environment, utilizing traditional Japanese construction techniques to withstand the elements.
The primary attraction is the residence's distinctive exterior. The heavy texture of the thatched roof combined with the unique patterns created by the Hishagi bamboo on the walls epitomizes the traditional Japanese rural landscape. The spatial arrangement, including the central front toilet, offers a rare glimpse into the cultural habits of the past. Please note that access to the interior of the building is restricted; visitors can observe and appreciate the architecture from the exterior only.
Surrounded by the untouched nature of Oku-Iya, this site offers a different face in every season. You can witness how the traditional architecture harmonizes with the changing scenery: the lush greenery of summer, the vibrant colors of autumn foliage, and the serene, white landscapes of winter. During the bright daylight hours, the textures of the thatched roof and the intricate details of the bamboo-covered walls are most clearly visible.
The main activity here is the contemplative observation of historical architecture. While you cannot enter the building, the experience of observing the structure within its natural environment is deeply rewarding. It is an ideal place to spend a quiet moment reflecting on how traditional architectural styles were designed to exist in perfect harmony with the surrounding mountains and nature.
The area around the residence is rich in other historical landmarks and natural beauty. Nearby, you can find other cultural assets like the 'Kimura-ke Residence' and the stunning landscapes of the Oboke and Iya gorges. The Oku-Iya area is part of a larger route for travelers wishing to explore the traditional 'Satoyama' landscapes of rural Japan.
Please wear comfortable walking shoes, as the terrain is natural and may include unpaved paths. As the visit is limited to the exterior, please respect the property and refrain from entering the house. Photography of the exterior is permitted, but please be mindful of the quiet environment. Since public transportation is limited in this remote area, it is highly recommended to arrange your own transportation in advance.