Hiraya Pavilion in Sapporo by YKAA – A Compact Wooden Pavilion for Flexible Living and Community

A Minimalist Cultural Pavilion Rooted in Nature and Urban Life

Located in Sapporo, Japan, the Hiraya Pavilion by YKAA reimagines small-scale cultural architecture through clarity, flexibility, and connection to nature. Designed as a multifunctional space for gathering, reflection, and creative activity, the 25 m² pavilion explores how modest materials and a compact footprint can cultivate spatial generosity, community, and long-term adaptability.

Conceived by architects Atsuki Yamazaki and Maryana Kovalchuk, the project responds to the client’s desire for a setting that transcends a single purpose — a place where everyday life, creative work, and shared dreams can coexist.

Context: A Threshold Between City and Nature

Set on a narrow, gently sloping site, the pavilion sits at the intersection of contrasting environments. Elevated highways, transmission towers, and busy roads articulate the surrounding urban landscape, while the Makomanai River, cycling paths, and lush greenery bring a soft, natural edge. This juxtaposition forms a unique backdrop — a balance between urban infrastructure and serene nature.

In this liminal setting, Hiraya becomes a quiet retreat and a flexible creative platform, offering calmness while remaining deeply connected to its surroundings.

Spatial Concept: Openness Within a Compact Footprint

The pavilion is organized as a 4,550 mm square volume with a compact service core, emphasizing simplicity and intentionality. The architects investigated how spatial openness and functional flexibility could coexist within strict physical and budgetary constraints.

Instead of expanding outward, the design enhances vertical and horizontal flow:

The volume is gently embedded 720 mm into the ground, forming a soft plinth that creates a continuous horizontal connection to the outdoors. This sculpted base invites informal gestures — sitting, resting, working, socializing — expanding how the space can be used throughout the day and seasons.

Wide openings on all four sides draw in natural light and blend interior and exterior spaces, emphasizing transparency and sensory awareness.

Central Structure: Lightness Through Structure

A symbolic central column, rotated 45 degrees, serves as the spatial anchor. It connects with a diagonal beam supporting a compact loft floor, forming a sculptural intersection that defines movement and sightlines. This architectural choreography activates both vertical and horizontal space.

Rather than achieving a column-free plan — easily possible at this span — the architects embraced the central structural element to:

• Articulate four subtle spatial zones
• Celebrate warm wood expression and tectonic detail
• Encourage dynamic circulation
• Maintain balance between structure and openness

Voids around the loft amplify the sense of volume and continuity, extending sightlines in all directions.

Materiality: Warmth, Craft, and Longevity

The pavilion is constructed from a light timber frame, highlighting Japanese carpentry sensibilities and local building culture. The wood expresses warmth and tactility, grounding the space with natural texture and intimate scale. Light, air, and shadow animate the interiors, emphasizing quiet simplicity and sensory richness.

Every design decision — from framing to floor elevation — contributes to a refined yet humble spatial character, reinforcing the project’s ambition to deliver value with restraint.

A Small Universe for Shared Life

Hiraya Pavilion is more than a compact structure; it is a micro-universe for creativity, gathering, and evolving use. Designed to adapt across seasons and over time, it embodies a gentle architectural resilience — one that rests lightly on the earth while inviting long-term human presence.

All photographs are works of Yongbaek Lee