designboom · Kunst en ontwerp

Temporary Pavilion for Japan's Forest Festival Features Cedar, Cypress, and Reclaimed CLT

The Onodatesho Pavilion, designed for Japan's annual National Tree-Planting Festival, utilizes regional cedar and cypress, along with large cross-laminated timber (CLT) panels. The structure's geometry is achieved through six operations: tilt, rotate, lean, taper, shift, and cut, coordinated by a repeated joint detail.

The pavilion's form is defined by three asymmetrical planes rotating around an axis. One plane leans ten degrees towards the audience, inspired by Mt. Ishizuchi, and is supported by steel rods. The arrangement of these planes considers ceremonial sightlines and sun protection, reflecting the festival's theme of renewal: plant, grow, use, repeat.

Developed with local carpenters, CLT manufacturers, and drafters, the structure blends regional timber traditions with modern production. Cedar and cypress from Ehime connect the pavilion to local forests, while large CLT panels showcase advancements in local timber technology. Cut-offs from the main CLT panels are repurposed for secondary elements like stage stairs. After the festival, the main panels are designed for reuse as custom furniture in regional schools, integrating material reuse into the pavilion's architectural strategy.

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