Architectural Cases

HYAN's 'Green Sandwich House': A Modern Renovation Embracing Heritage in Hayama

In a compelling display of architectural ingenuity, Japanese firm HYAN has reimagined an aging 1970s timber residence in Hayama, Kanagawa, transforming it into a contemporary dwelling and workspace for its principals. This extensive renovation, completed in 2025, stands as a testament to the studio's commitment to sustainability and respect for architectural heritage, as it consciously opted to preserve and upgrade the existing structure rather than undertake a complete demolition and rebuild. The project artfully blends the nostalgic charm of the original construction with modern design principles, creating a living and working environment that is both functional and aesthetically pleasing, while also meeting current seismic safety standards.

The original house, constructed in the late 1970s, predated Japan's stringent 1981 seismic codes. Located in a hillside residential area behind Hayama's historic imperial villa district, the property offered a unique opportunity for HYAN to integrate their design philosophy into a structure with a rich past. Rather than simply imposing new elements, the renovation focused on a thoughtful reinterpretation of the existing spatial layout and material palette. The architects meticulously reinforced the building's structural integrity, ensuring it could withstand future seismic events, while simultaneously enhancing its aesthetic appeal and functionality.

The renovation strategy embraced the concept of 'inheritance,' wherein the spirit of the old house was maintained while being adapted for modern living. This involved a careful selection of materials, with a particular emphasis on wood, which not only resonated with the original timber construction but also contributed to a warm and inviting atmosphere throughout the interiors. New elements were introduced with a keen eye for continuity, ensuring that additions complemented the existing framework rather than clashing with it. This approach allowed for the creation of open, light-filled spaces that foster creativity and tranquility, perfectly suited for a combined home and studio.

The updated residence now boasts a harmonious blend of private and communal areas, designed to facilitate both domestic life and professional work. Interior spaces feature clean lines and a minimalist aesthetic, punctuated by natural light and the textures of wood and other organic materials. The project exemplifies how older buildings can be revitalized to serve contemporary needs, proving that sustainable architecture often involves thoughtful renovation rather than outright replacement. By choosing to 'inherit' and adapt, HYAN has created a unique property that respects its past while firmly embracing the future of design and living.

The transformation of the Hayama house into the 'Green Sandwich House' underscores a broader trend in architecture towards adaptive reuse and responsible development. This project by HYAN demonstrates that renovating existing structures can yield aesthetically sophisticated, highly functional, and environmentally conscious results, all while honoring the historical context of the site.

Global Architecture: Earthquake Relief, Urban Development, and Landmark Designs

This compilation of global architectural developments highlights pressing issues and ambitious projects across the world. From post-disaster reconstruction to pioneering urban designs, the reports capture the dynamic and multifaceted nature of contemporary architecture. It delves into the immediate humanitarian responses to natural calamities, showcasing the architectural community's role in rebuilding and resilience. Simultaneously, it celebrates visionary urban initiatives and landmark constructions that are set to redefine skylines and public spaces in major cities and emerging urban centers.

Global Architectural Insights: Resilience, Innovation, and Cultural Milestones

In a week marked by both urgent humanitarian needs and ambitious urban endeavors, the global architectural landscape presented a compelling narrative of resilience, innovation, and cultural significance. On August 13, 2026, the ongoing aftermath of a magnitude 7.4 earthquake in Colombia necessitated sustained relief and reconstruction efforts, drawing the focus of the architectural community towards recovery and rebuilding strategies. Concurrently, UNESCO recognized two crucial international observances: the International Day of the World's Indigenous Peoples, underscoring the profound importance of ancestral constructive knowledge, and International Youth Day, which prompted discussions on how architectural design can effectively meet the evolving aspirations of younger generations.

Meanwhile, new and transformative projects were unveiled across diverse geographic regions. In Vlorë, Albania, OODA's striking DUAS Towers, a mixed-use development, officially moved into its licensing phase, signaling the impending construction of two distinct, yet harmoniously designed, high-rises. These towers, reaching ninety-eight meters over twenty-four floors, will feature a unique composition of stacked stone blocks, clad in locally sourced Tomorri marble, reflecting traditional Albanian weaving patterns in their elevations. The ground floors are planned for public use, while the rooftops will offer skybars, restaurants, and drought-tolerant landscaping.

Across the Atlantic, in Chicago, Illinois, Skidmore, Owings & Merrill (SOM) celebrated a significant milestone with the topping out of the North Tower at 400 Lake Shore Drive. This 261-meter, seventy-two-story residential skyscraper, first conceptualized in 2018 and breaking ground in 2024, now majestically punctuates the city's iconic lakefront where Lake Michigan meets the Chicago River. Scheduled for completion in spring 2027, the tower will house 635 residences, including 127 affordable units. Its design, characterized by cascading terraces and a faceted glass curtain wall reminiscent of Chicago's classic bay windows, incorporates advanced wind-testing methodologies for structural integrity and a distinctive twenty-five-meter architectural crown.

Further afield, in Qiddiya City, Saudi Arabia, Populous unveiled its vision for the National Tennis Centre. Construction is already underway for this expansive facility, strategically located forty-five kilometers west of Riyadh amidst the dramatic Tuwaiq Mountains. The center is poised to become the largest tennis complex in the region, boasting thirty courts—including twenty-eight hard courts and two clay courts—all designed to meet ATP, WTA, and ITF standards. With a total seating capacity of 33,000 across its various venues, the complex will feature a green-facade design seamlessly integrating it with the natural landscape. Highlights include Centre Court, a 15,000-seat multi-purpose arena, and an 8,000-seat Court 3, both equipped with retractable roofs to host a variety of events beyond tennis. The development is a cornerstone of Qiddiya City's broader masterplan, which envisions extensive residential, office, and retail growth.

Culturally, the theme for the Türkiye Pavilion at the upcoming 20th International Architecture Exhibition of La Biennale di Venezia was announced, focusing on the concept of 'spolia.' This exploration delves into the reuse of architectural elements, fostering new relationships between architecture, memory, and societal continuity through themes of coexistence, archiving, slowing down, repair, and future speculation. Echoing this convergence of image and memory, film director Wim Wenders' new documentary, "From Inside Out – The Architecture of Peter Zumthor," is set to premiere in September 2026. The film promises an intimate portrayal of the Pritzker Prize-winning architect's work, capturing the atmospheric and symbolic qualities of space as depicted through cinema.

These diverse global developments—from immediate disaster response and cultural celebrations to visionary urban planning and iconic structural creations—collectively paint a vivid picture of architecture's enduring power to shape human experience, foster community, and respond to the complex challenges and opportunities of our time.

The global architectural narrative this week underscores architecture's profound capacity to address both immediate crises and long-term aspirations. The ongoing recovery efforts in Colombia serve as a stark reminder of architecture's role in rebuilding communities and restoring hope after devastation. Simultaneously, the forward-thinking urban projects in Beijing, Vlorë, Chicago, and Qiddiya City demonstrate how innovative design and sustainable practices can shape the future of our cities, enhancing quality of life and creating iconic landmarks. The recognition of ancestral knowledge and the intersection of architecture with art and memory through the Venice Biennale and Wim Wenders' film highlight the discipline's deep cultural roots and its potential for storytelling and reflection. These developments collectively emphasize that architecture is not merely about constructing buildings, but about crafting environments that embody human endeavor, resilience, and vision for generations to come. It’s a field constantly evolving, driven by both practical needs and creative inspiration, shaping our world one structure and one city at a time.

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Tianfu Fusion Technology Research Center: A Fusion of Science and Architecture in Chengdu

The Tianfu Fusion Technology Research Center, a monumental architectural achievement in Chengdu, China, symbolizes a profound convergence of scientific ambition and design ingenuity. This facility, completed in 2026 and spanning an impressive 38,000 square meters, was meticulously crafted by CSWADI for the Southwest Institute of Physics (SWIP) of the China National Nuclear Corporation. Its very essence is rooted in the pivotal mission of advancing controllable nuclear fusion research. Drawing inspiration from the inherent circularity observed in atomic structures and the grand scale of the cosmos, the design integrates circles as a dominant motif across its architecture and surrounding landscape. This choice not only imbues the center with a sense of cosmic harmony but also subtly references the traditional 'Tianjing' (light well) found in classical Sichuan dwellings, marrying ancient local aesthetics with futuristic scientific pursuits. The result is a structure that is both functionally cutting-edge and deeply resonant with its cultural and scientific contexts.

A Detailed Look at the Tianfu Fusion Technology Research Center

Situated in the vibrant city of Chengdu, China, the Tianfu Fusion Technology Research Center stands as a beacon of architectural innovation, realized through the collaborative efforts of CSWADI and the Southwest Institute of Physics. The design team, spearheaded by Chief Designer Liu Yi, along with Deputy Chief Designers Ma Jun and Feng Ting, embarked on a journey to create a facility that would not only meet the rigorous demands of nuclear fusion research but also embody a profound symbolic meaning. The architectural design team included Liang Qinghua, Liu Jincai, Xu Runzhao, Zhang Jingyi, and Wu Cailing. They envisioned a complex where the circular forms, prevalent from the microscopic world of particles to the vastness of the universe, would serve as a unifying element. This philosophical approach is echoed in various design components, from the fluid integration of interior spaces to the meticulous landscaping.

The structural integrity of this grand vision was meticulously planned by a team led by Liao Li'an, Zhou Haozhang, Tao Lei, Xu Yudong, Yu Yu, Chen Yuanlong, Li Yisong, Xu Zhi, ensuring both safety and aesthetic harmony. Essential services, such as water supply and drainage, were expertly handled by Jiang Haibo, Han Qingchang, Guo Libao, Zhou You, Huang Chuang, Yang Shizhong, and Wang Tiezhu. The HVAC systems, critical for a facility of this nature, were designed by Guo Ping, Zhang Wuqian, Hu Yi, Zhao Xinyi, Xiong Xiaojun, and Rong Xiangyang, Du Gao. The electrical infrastructure, a complex network powering advanced research, was the responsibility of Liu Wei, Ding Xindong, Wang Zheng, Yang Ruomeng, and Tan Chao. Intelligent building systems and sophisticated floodlighting, contributing to both functionality and visual appeal, were conceived by Zhang Xiaogang, Nie Jin, Yang Li, and Luo Lihong. The building's striking exterior, characterized by its curtain wall, was developed by Yin Bingli, Mo Hongmei, Yuan Junpeng, and Zhu Xiaopeng. Complementing the architectural marvel is the surrounding landscape, designed by Gao Haitao, Mao Jia, Geng Wenchuang, and Song Xiurui, which seamlessly blends with the building's circular motifs. Furthermore, a dedicated building technology design team, comprising Liu Shuangsheng, Chen Jun, Cai Junwei, and Dou Mei, ensured cutting-edge solutions, while the interior spaces, designed by Yan Zhimin, Shi Qiang, and Du Qian, offer a conducive and inspiring environment for scientific inquiry. This collaborative effort has culminated in a research center that is not just a building, but a testament to human ingenuity and the pursuit of knowledge.

The Tianfu Fusion Technology Research Center serves as an inspiring example of how architecture can transcend mere functionality to embody profound scientific and cultural narratives. The design's embrace of circularity, reflecting the fundamental structures of the universe, not only creates an aesthetically pleasing and harmonious environment but also subtly encourages a holistic approach to scientific discovery. This project highlights the potential for architectural design to not just house innovation, but to actively inspire it, fostering a sense of wonder and connection to the larger cosmos within its occupants. It underscores the importance of thoughtful, context-aware design in creating spaces that are both practical and deeply meaningful.

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