In conversation with Cievanard "Stamp" Nattabowonphal of Unknown Surface Studio on leaving comfortable roles at world-renowned practices to design spaces guided by the inherent logic of nature.
Whether mesmerised by the wave-like contours of Uncloud Coffee or intrigued by the column-free bravery of Terrarium House—a private residence screened behind granite walls where natural elements dictate structural geometry—one encounters the work of Unknown Surface Studio, a practice defining a fresh architectural dialect in Thailand.
Founded by Cievanard Nattabowonphal, Piyanat Songkhroh, and Nonglak Boonsaeng, the studio emerged when Stamp departed Beijing’s MAD Architects following specialised design studies in Germany. Returning home, he set out to question whether Thai architecture could transcend familiar forms to deliver deeper spatial experiences.
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Above Cievanard Nattabowonphal (Photo: Unknown Surface Studio)

Above Piyanat Songkhroh (Photo: Unknown Surface Studio)

Above Nonglak Boonsaeng (Photo: Unknown Surface Studio)
The defining appeal of Unknown Surface Studio lies not in creating futuristic shapes merely for shock value, but in practicing "the art of translation"—using the underlying intelligence of natural systems as a primary design catalyst.
“We view 'Surface' as an open concept that extends far beyond physical buildings to encompass artistic planes,” Stamp reflects on the practice’s name. “Our ambition is to introduce uncharted surfaces that quietly become part of Thailand’s design landscape.”
For the practice, architecture functions not as a passive backdrop, but as an active realm engaging occupants through light, shadow, and structural freedom—guiding people toward unexplored spatial emotions.

Above Calypso Cave Pool Villa, designed by Unknown Surface Studio.
Nature as design intelligence
Establishing the practice brought initial challenges. Stamp admits to early hesitations, worrying that the local market might favor conventional, safe resort-style aesthetics.
“Had I launched the practice alone, anxiety might have steered us toward safe choices,” Stamp recalls. “Collaborating with partners who embrace bold exploration empowered us to pursue ambitious ideas.”
Uncloud Coffee marked a pivotal turning point for the studio.
“We wrestled with construction costs and client reception, going through three conceptual iterations that felt incomplete,” Stamp laughs. “Ultimately, I drew a freehand stroke without overthinking—a half-hour gesture that instantly resonated with the client.”

Above Uncloud Coffee, designed by Unknown Surface Studio.

Above Uncloud Coffee, designed by Unknown Surface Studio.

Above Uncloud Coffee, designed by Unknown Surface Studio.
That breakthrough proved the local market was ready for fresh spatial typologies. With fear set aside, Unknown Surface Studio embedded natural logic as a core design framework rather than superficial ornament.
“When embarking on a project, we challenge ourselves to avoid familiar references, striving for intelligent design,” Stamp explains. “Intelligent design achieves high impact through conceptual clarity. Curvy.Dining translates a single center point into radial interior spaces where petal-like forms function as structural enclosures—a clear, logical progression.”

Above Curvy.Dining, designed by Unknown Surface Studio.

Above Curvy.Dining, designed by Unknown Surface Studio.
The art of translation
Drafting free-form geometry in digital environments is one thing; executing it on physical sites calls for pragmatic translation. The studio excels at translating parametric computational concepts into approachable details that local contractors can build with confidence.
“A former MAD Architects colleague visiting from Russia appreciated that our work avoids overly complex mega-project gestures,” Stamp smiles. “Instead, we translate those parametric principles into accessible scales like cafes and private residences suited to local construction systems.”

Above White Lotus House, designed by Unknown Surface Studio.
Terrarium House illustrates this collaborative translation—a column-free residence built alongside a homeowner with a background in contracting. To execute the circular roof shell, they adopted a top-down construction sequence, assembling the overhead structure before completing ground-level elements.
“The residence reflects its owner's character,” Stamp notes, highlighting upcycled reclaimed timber that ages gracefully over time. Site constraints inspired sustainable details: discarded granite offcuts were reassembled into acoustic boundary walls along the entry.

Above Terrarium House, designed by Unknown Surface Studio.
Architecture as interaction
For Unknown Surface Studio, successful architecture listens to its context rather than dominating it.
“Clear site constraints simplify the design process,” Stamp reveals. “Unconstrained sites present greater challenges because we must establish our own anchor.” Natural light acts as a co-architect—circular skylights illuminate hinoki timber surfaces, casting shifting tones throughout the day.

Above Terrarium House, designed by Unknown Surface Studio.
Spatial proportions directly shape human emotion. “A homeowner once noted that living in an oversized, double-height apartment felt isolating,” Stamp reflects. “Monumental scale does not guarantee everyday comfort. Understanding human proportions is essential for domestic well-being.”
Empathetic design invites nature into daily life. At Terrarium House, apertures allow mature trees to grow through the roof frame. “Originally named Hashi Home, I suggested renaming it Terrarium House,” Stamp reflects. “The design reverses traditional expectations—rather than showcasing plants inside glass containers, the surrounding landscape embraces the living spaces within.”

Above Stamp Cievanard Nattabowonphal
The next surface
While recognized for fluid curves, Unknown Surface Studio continues to expand its design vocabulary.
“While clients often associate us with curved geometry, our team focuses on exploring uncharted surfaces,” Stamp reflects. “An 'Unknown Surface' can embrace faceted geometries, triangular forms, or crisp linear angles that evoke fresh spatial emotions.”

Above Canvas House, a design by Unknown Surface Studio.

Above Bangna House, designed by Unknown Surface Studio.
Looking ahead, the practice aims to reinterpret regional Thai architectural roots through forward-looking design languages while engaging in international competitions, including a national library proposal in South Korea.
Ultimately, Unknown Surface Studio crafts architectural surfaces designed to be lived in—converting complex global design concepts into warm, inviting environments.

Above Uncloud Coffee, designed by Unknown Surface Studio.
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