Founded in 2020 by Masato Igarashi, IGArchitects is an architectural practice based in Tokyo and Saitama, Japan. The studio, one of the winners of the ArchDaily 2025 Next Practices Awards, explores enduring architecture through a careful yet assertive treatment of structure, scale, and materiality. Prior to establishing his own practice, Igarashi worked at the large-scale firm Shimizu Sekkei as well as the Suppose Design Office, gaining experience across projects ranging from major developments to smaller, concept-driven works. This breadth of experience continues to inform IGArchitects' current focus on residential and commercial architecture across Japan.

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Behind facades lie vibrant lives, where the exterior melds with the interior, transforming neglected urban spaces into captivating residences. In cities around the world, architects, engineers and designers face the challenge of integrating new buildings into existing urban landscapes with limited space. Many architects are now embracing this concept, expanding their designs beyond conventional boundaries and transforming small city lots into layered and interconnected living spaces.

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The term vault in architecture refers to a self-supporting arched structure that forms a ceiling or roof, which can effectively create a wide, column-free space. While traditional masonry vaults transfer loads to walls and buttresses, contemporary versions are more broadly defined as any ceiling that follows the roofline, creating a high, curved interior. These modern ceilings are typically framed using materials like concrete, timber, or steel, which provide the structural flexibility to create the dramatic effect of a vault without its historical constraints. The round arch vault, in particular, seems to have been a recently favored form for its simple, elegant geometry and its ability to adapt to a variety of modern residential styles.

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Kindergarten architecture has long stood apart as a realm where design and imagination converge. Unlike most building typologies, these spaces are conceived not only to shelter and function but to shape the earliest experiences of curiosity, play, and social interaction. Throughout history, the design of kindergartens has evolved alongside pedagogical shifts, moving from modest, utilitarian beginnings to highly intentional environments that stimulate both learning and wonder. In this context, architecture becomes more than a backdrop — it becomes a silent educator, capable of nurturing emotional, cognitive, and physical development.

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In contemporary Japanese and Chinese kindergarten design, architects are transforming the interior spaces from a simple container into an active, multi-sensory environment. This shift seems to follow Studies in developmental psychology that suggest that a child's experience of space begins with a sensorimotor engagement through touch and manipulation. Thus, they place a strong emphasis on the use of materials and the approach of learning through play. Architects seem to be moving beyond traditional classrooms, into environments that are tactile, stimulating, and rooted in their specific contexts. The buildings themselves become tools for education, encouraging children to learn and explore through direct physical engagement.

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As cities continue to grow and daily realities shift rapidly, people are turning to new and evolving ways to maintain their well-being. While promoting active lifestyles has long been a focus for many planners and architects, through pedestrian- and bike-friendly cities, parks, and fitness or sports centers, recent times have shown that these publicly valued facilities are not always accessible. A clear solution has emerged in recent years, accelerated by the global pandemic in 2020. Both homes and workplaces have begun to adapt their interior spaces, incorporating designated areas and equipment to support physical activity and provide opportunities for movement during the day.

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