Aluminum Grotto and Public Ground: Innovative Public Architecture by HAS Design and Research

The Aluminum Grotto and Public Ground, designed by HAS Design and Research, stands as a landmark in contemporary public architecture and installation design in Bangkok, Thailand. Completed in 2024, this 180 m² structure was commissioned by S-ONE Group and KIN to celebrate the 90th anniversary of The Association of Siamese Architects under Royal Patronage (ASA). The project exemplifies the seamless integration of traditional Thai craftsmanship, modern materials, and multifunctional public spaces.

Concept and Design Philosophy

Lead architects Jenchieh Hung and Kulthida Songkittipakdee envisioned the Aluminum Grotto as more than a pavilion: it is a community-oriented space designed for art exchange, learning, and public engagement. The concept merges Thailand’s industrial identity as a leading Southeast Asian aluminum producer with the urgent need for accessible public spaces in Bangkok, where per capita green space measures just 6.99 m², below the World Health Organization’s recommendation of 9 m².

The design presents a valley-like grotto, evoking natural landscapes historically central to Thai living. Its open layout encourages community participation, offering free access for educational lectures, exhibitions, and cultural events. By creating a non-commercial, interactive environment, the pavilion emphasizes knowledge sharing, cultural dialogue, and experiential learning.

Architectural Features and Spatial Experience

The structure’s elevated design generates open "gray spaces" beneath the pavilion, blending indoor and outdoor environments. Drawing inspiration from traditional Thai stilt houses, the multi-functional space supports a variety of activities while maintaining a fluid connection with nature. The grotto-inspired interior utilizes natural light to enhance sensory experiences during public events, creating a unique sense of ceremony and spatial immersion.

At the heart of the design lies Total-ness Design, integrating structure, space, and façade. Constructed from hundreds of thousands of aluminum rods, each precisely cut to a unique length, the structure reflects meticulous craftsmanship reminiscent of Thai temples. This approach not only demonstrates technical innovation but also revitalizes traditional techniques, blending heritage with contemporary industrial materials.

Materials, Craftsmanship, and Innovation

The Aluminum Grotto features an intricate aluminum façade, combining structural integrity with aesthetic fluidity. Every rod is handcrafted and assembled on-site, highlighting artisan skill and attention to detail. The design embodies a dialogue between industrial progress and cultural preservation, creating a space where modern architecture meets local craftsmanship.

Beyond its visual impact, the pavilion serves as a model for sustainable and community-focused public architecture, offering a versatile platform for learning, interaction, and cultural engagement. By reimagining aluminum as both a structural and expressive medium, HAS Design and Research challenges conventional approaches to metal architecture in Southeast Asia.

Community Impact and Cultural Significance

The Aluminum Grotto and Public Ground reinforces the value of accessible public spaces in dense urban environments. By providing a free, non-commercial venue for creativity and education, it encourages local communities and visitors to engage in cultural discourse. The project also celebrates Thailand’s industrial heritage, showcasing aluminum not just as a material, but as a symbol of national identity and craftsmanship excellence.

In creating this immersive architectural installation, HAS Design and Research bridges past and future, offering a transformative public space that inspires both sensory and intellectual exploration.

All photographs are wokrs of  DOF Sky|Ground