Yushima Building by Tenhachi Architect & Interior Design: A Timber-Clad Vertical Landmark Rooted in Tokyo’s Urban Fabric

A Soft, Wooden Silhouette Along Historic Nakasendo

Located near the revered Kanda Myojin Shrine and facing the historic Nakasendo route, the Yushima Building by Tenhachi Architect & Interior Design redefines what a compact urban office tower can be. Set on a narrow 5.2m × 14.5m site in central Tokyo, and surrounded by dense mid-rise structures, the project aims not to stand out through visual dominance, but to soften its presence within the cityscape. Its design strategy centers on blurring architectural boundaries and creating a warm, human-scaled vertical form.

A 10-Story Pencil Tower Designed to Age Gracefully

The building rises as a slender 10-story office tower, but it avoids the typical coldness of commercial architecture by embracing natural materials—especially wood—as its core identity. The façade and entry are wrapped in Franwood, a domestically sourced timber produced from forest thinning during mountain path conservation work. This sustainable, plant-based material offers more than aesthetic warmth:

• Zero maintenance and no chemical coatings
• Over 50 years of outdoor durability
• A weathering process that helps the building blend into the city over time

As Franwood subtly ages, the building forms a gentle dialogue with its surroundings, evolving with the seasons and contributing to a more resilient and natural urban expression.

Material Honesty: Embracing Time, Weathering, and Change

Complementing the timber exterior, hot-dip galvanized steel panels are used throughout the façade. Instead of hiding patina or natural wear, the design celebrates materials that retain the memory of time. This approach rejects the pursuit of a permanently pristine surface and instead promotes an architecture that matures with the environment, reflecting shifts in climate, use, and atmosphere.

Beyond the visual qualities, wood serves multiple environmental and urban functions:

• Carbon fixation and reduced emissions
• Improved thermal comfort in dense urban zones
• Circular use of forest resources
• Support for local production and timber economies

The Yushima Building becomes a quiet, sustainable presence that enriches the everyday life of the neighborhood.

Open, Flexible Interiors Supported by a Rigid Frame Structure

The building’s structural system uses a rigid rahmen frame of beams and columns. By eliminating bracing and shear walls, Tenhachi creates open, flexible floor plates that adapt to changing office needs.

• Ground Floor: A street-facing retail space that activates the pedestrian edge
• Floors 2–10: Office floors designed for spatial clarity, comfort, and productivity

Every interior element—from the warm timber accents to the careful detailing—reflects a commitment to supporting users with a calm, tactile working environment.

A Rooftop That Reconnects with Tokyo’s Skyline

At the top, a rooftop terrace opens to expansive views of the Ochanomizu skyline, including landmarks such as Yushima Seido, Nikolai-do Orthodox Cathedral, and Hijiribashi Bridge. Despite its compact footprint, the vertical journey culminates in a rare moment of openness—an elevated refuge where the rhythm of the city briefly slows.

Architecture That Breathes with the City

The Yushima Building does not attempt to shield itself from urban noise or visual density. Instead, it breathes with Tokyo, drawing strength from its materials, its context, and its honest relationship with time. Through wood, steel, and thoughtful design, the building forms a soft yet enduring outline—an example of how sustainability, heritage, and contemporary urban life can coexist within a compact architectural footprint.