A new boutique-scale hospitality project in Argentine Patagonia highlights how material choices drive architectural identity, sustainability, and landscape integration. Designed by OJA (Organic & Joyful Architecture), Casa Gallareta consists of modular cabins carefully inserted into a native forest of Coihue and Arrayán trees near Lake Correntoso. The design centres on the expressive use of natural materials, including shou sugi ban-treated eucalyptus wood, Lapacho hardwood, and light-toned Guatambú timber, all selected for their environmental performance, visual qualities, and longevity.

Material Expression in Harmony with Nature
The cabins feature a robust, expressive exterior made from eucalyptus wood treated with the traditional Japanese technique of shou sugi ban (yakisugi). This ancient method of surface-charring the wood naturally improves its resistance to water, fire, and pests while enhancing durability and eliminating the need for chemical treatments. The resulting dark, textured façade creates a strong visual contrast against the forest’s lush greens and the winter snow, allowing the structures to recede into their surroundings.

Additional materials—such as Lapacho wood, black metal framing, glass, and exposed concrete—were selected to complement the charred timber cladding both visually and functionally. Lapacho, a cinnamon-hued hardwood reminiscent of native Arrayán trees, is used selectively to provide warmth and material contrast.

Inside, the cabins take a unified approach to material use. Walls, ceilings, flooring, and furniture are all finished in Guatambú wood, a light-toned, knot-free timber chosen for its visual clarity and calming qualities. Used in large panels, this biobased material contributes to a minimalist, monolithic interior that visually merges walls and furnishings into a seamless whole. The interior design approach supports both spatial coherence and construction efficiency.

Architecture Embedded in the Landscape
Each cabin was placed within existing clearings, preserving the forest’s native trees and topography. The structures are elevated on reinforced concrete foundations to address the steep terrain and minimise ground disturbance. Large, strategically placed windows open onto the forest canopy, promoting passive ventilation and extending the interior experience into the landscape.

While compact, the cabins are divided into half-levels, creating spatial variety and reinforcing a sense of immersion. The largest unit features a panoramic bathtub with forest and snowfall views, blending luxury with environmental sensitivity.

Dry construction techniques and modular planning enabled efficient on-site assembly, addressing the logistical challenges of the remote, densely wooded site. The project totals 250 m² and operates as a small-scale guest complex.

A Model for Material-Driven Design
Casa Gallareta offers a clear example of how biobased, durable, and low-impact materials can shape contemporary architecture in ecologically sensitive settings. The restrained palette and traditional wood treatment techniques support long-term performance and visual integration, while respecting circular design principles.

This project is particularly relevant for architects, interior designers, and landscape architects interested in sustainable construction methods, timber innovation, and context-aware design. It demonstrates how material consistency and careful planning can produce distinctive, environmentally responsive spaces.

Source: OJA via v2com
Photos: Juan Segundo Diaz Dopazo, Carlos Uliambre, Abril Roffo, Nacho Ballester