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A truly exceptional property known as "Roof/Birds," designed by the internationally acclaimed architect Kengo Kuma & Associates, has been listed for sale in the prestigious resort town of Karuizawa, Nagano Prefecture, Japan, with an asking price of $10,072,110. Completed in 2016, this architectural marvel, nestled within Nagakura’s serene landscape adjacent to Karuizawa’s celebrated Wild Bird Forest, represents a profound fusion of innovative design, artistic sensibility, and seamless integration with the natural environment. Spanning a total footprint of 2,583 square feet across a generous 0.6-acre (approximately 2,465 square meters) lot, the compound comprises a main residence featuring one master bedroom and two traditional Japanese-style guest rooms, complemented by three distinct, detached guest buildings. This unique configuration creates a "private village" intended for sophisticated entertaining, artistic appreciation, and tranquil retreats.
The Vision of Kengo Kuma: Architecture as Landscape
Kengo Kuma, renowned for his "anti-object" architecture and a philosophy that prioritizes harmony between buildings and their natural surroundings, conceived "Roof/Birds" as a living embodiment of these principles. His firm, Kengo Kuma & Associates, envisioned the residence not as a singular, imposing structure but as a collection of roofs, artfully arranged to mimic the dynamic flight of wild birds across the forest canopy. This conceptual genesis is deeply ingrained in the property’s very name and its multi-building layout, creating a sense of lightness and movement that defies conventional architectural mass. Kuma’s work, often characterized by the extensive use of natural materials, intricate wooden lattices, and designs that encourage transparency, seeks to dissolve the traditional boundaries between interior and exterior spaces, allowing occupants to experience nature as an integral part of their daily lives. The "Roof/Birds" project, constructed by Sasazawa Construction Co., Ltd. with landscape design by Sato Landscaping Co., Ltd., stands as a testament to this commitment, utilizing reinforced concrete and steel framing topped with galvanized-steel roofing, all carefully chosen to blend with the sylvan context.
Karuizawa: A Haven of Natural Beauty and Refined Living
The setting of "Roof/Birds" in Nagakura, Karuizawa, significantly enhances its allure. Karuizawa, nestled at the foot of the active volcano Mount Asama, has long been Japan’s premier mountain resort destination, favored by Tokyo’s elite, artists, and foreign dignitaries since the late 19th century. Its history as a summer retreat for the Imperial family and as a haven for creative minds has cultivated an atmosphere of understated luxury and cultural sophistication. The town is celebrated for its cool climate, lush forests, crisp mountain air, and abundant wildlife, particularly its diverse bird population, making the "Wild Bird Forest" a natural extension of the property’s ethos. This environment provides a dynamic backdrop, with the landscape transforming dramatically through Japan’s distinct four seasons—from the vibrant greens of summer to the fiery hues of autumn and the serene snowscapes of winter. The agent’s description highlights this, noting how the large openings and generous terraces of "Roof/Birds" are specifically designed to frame these changing vistas, blurring the distinction between the architectural envelope and the living, breathing forest outside.
A "Private Village" Designed for Connection and Serenity
The unique layout of "Roof/Birds" as a "private village" is a cornerstone of its design philosophy, fostering both communal gathering and individual tranquility. The compound features a main residence that serves as the heart of the home, offering a sophisticated living environment. Here, warm timber finishes, characteristic of Kuma’s preference for natural materials, are paired with dramatic structural details that showcase the artistry of its construction. A traditional Japanese-style tatami space provides a serene area for relaxation and contemplation, echoing traditional Japanese aesthetics within a contemporary framework. The inclusion of a sauna further enhances the main residence’s luxurious amenities, offering a private sanctuary for wellness.
Beyond the main dwelling, three separate guest buildings are strategically dispersed across the expansive 0.6-acre property. Each of these structures is designed as an independent and private retreat, ensuring comfort and privacy for visiting family and friends. This arrangement allows for flexible living, catering to a lifestyle that values both intimate family moments and gracious hospitality. A particularly striking feature is that one of these guest rooms offers breathtaking, unobstructed views towards the majestic Mount Asama, providing a constant connection to Karuizawa’s iconic natural landmark. This thoughtful distribution of spaces underscores the property’s intention to provide a comprehensive, curated experience for its inhabitants and their guests, balancing shared experiences with personal space.
Seamless Integration: Materials, Light, and Transparency
Kuma’s architectural genius at "Roof/Birds" is most evident in its seamless integration with the natural environment. The design emphasizes transparency and lightness, achieved through slender structural columns and expansive glass walls. This approach allows the buildings to appear almost suspended within the forest, minimizing their visual impact and maximizing the connection to nature. The deep eaves and generous terraces, reminiscent of traditional Japanese engawa (verandas), serve as transitional zones, further blurring the boundary between indoor and outdoor spaces. These elements not only provide sheltered outdoor areas for enjoyment but also contribute to the architectural language of the "flying roofs," creating a dynamic interplay of light and shadow throughout the day.
The choice of materials—warm timber for interiors, robust reinforced concrete and steel for structure, and galvanized steel for roofing—reflects Kuma’s commitment to both aesthetic appeal and durability. The timber elements bring a sense of warmth and natural texture to the sophisticated interiors, creating inviting spaces that are both modern and deeply rooted in Japanese tradition. The structural clarity and material honesty are hallmarks of Kuma’s work, ensuring that every detail contributes to the overarching theme of harmony with the environment. This meticulous attention to detail ensures that "Roof/Birds" is not merely a house but an experience, where the forest is not simply a backdrop but an active participant in everyday life.
A Curated Lifestyle: Art, Furniture, and Fixtures Included
Adding to its exclusivity, the sale of "Roof/Birds" includes the artworks, furniture, and fixtures currently adorning the property. This significant detail underscores the comprehensive and curated nature of the offering. It implies that the interiors have been thoughtfully furnished and decorated to complement Kengo Kuma’s architectural vision, creating a cohesive aesthetic where every element contributes to the overall artistic and experiential quality of the home. For a discerning buyer, this means acquiring a fully realized artistic environment, where the transition from ownership to occupancy is seamless, allowing for immediate immersion in the unique lifestyle "Roof/Birds" promises. This ready-to-live-in aspect enhances the property’s appeal as a turn-key luxury retreat, removing the complexities of furnishing and art acquisition often associated with high-end real estate.
Strategic Location and Accessibility
Despite its secluded, forest-edge location, "Roof/Birds" boasts excellent accessibility, a crucial factor for a luxury resort property. It is conveniently situated approximately five minutes by car from Naka-Karuizawa Station and a mere 13 minutes from Karuizawa Station. Karuizawa Station is a major hub on the Hokuriku Shinkansen line, offering rapid connections to Tokyo, making the property an ideal weekend escape or a more permanent retreat for those seeking a balance between urban proximity and natural serenity. This strategic location allows residents to enjoy the tranquility and natural beauty of Karuizawa while maintaining convenient access to metropolitan amenities and transportation networks, a combination highly valued in the Japanese luxury real estate market.
A Rare Investment in Architectural Legacy
The listing of "Roof/Birds" presents a truly rare opportunity to acquire an architectural masterpiece by one of Japan’s most celebrated and influential contemporary architects. Kengo Kuma’s global reputation, cemented by projects like the Japan National Stadium for the Tokyo 2020 Olympics, the V&A Dundee in Scotland, and numerous other acclaimed cultural and commercial buildings worldwide, ensures that his works are highly sought after by collectors and connoisseurs of design. Owning a Kengo Kuma-designed residence is not just an acquisition of property; it is an investment in a piece of modern architectural history and a lifestyle deeply rooted in aesthetic appreciation and environmental consciousness. The price tag of over $10 million reflects not only the prime location and expansive facilities but also the inherent value of an architecturally significant property crafted by a master of his field.
"Roof/Birds" embodies a unique sanctuary where the pristine forests of Karuizawa, the refined beauty of Japanese design, and a life enveloped by art converge into a single, harmonious experience. For those who appreciate the delicate balance between human creation and the natural world, this property offers an unparalleled opportunity to live within a living work of art, designed to inspire and rejuvenate. Its arrival on the market underscores the enduring appeal of Karuizawa as a luxury destination and the timeless, evolving legacy of Kengo Kuma’s architectural philosophy.
