A unique building in Busan with red spiral stairs and a striking glass facade, creating a modern urban landmark.

Daring Red Spiral Stairs and Glass Facade Define Busan’s “Koma” by U.GA Architects

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Written by Flynn Matthews

2026-08-12

A juxtaposition of modernity and nostalgia in Haeridan-gil

In Busan’s Haeridan-gil, a neighborhood known for its transformation of timeworn residential streets into vibrant cultural avenues, the “Koma” commercial facility stands out with its striking design and distinctive red spiral stairs. Dae-woo Yu of U.GA Architects leads the architectural vision, with contributions from Soon-jung Shim and Hyo-kyung Kwon.

This unique structure occupies just 51 square meters, yet its design impact is monumental. Its completion, set for 2025, promises to redefine the area’s architectural dialogue.

Architectural audacity meets winding ascent

Koma’s design philosophy rejects traditional notions of scale, emphasizing attitude and architectural intuition instead. At a sharp, acute-angled intersection, the building asserts itself through a distinctive architectural approach, highlighted by its winding ascent.

Close-up of the red spiral staircase against a clear blue sky background.

The structure is crafted using Namsun Aluminum, ensuring durability and a sleek, contemporary look. The integration of this feature provides both aesthetic appeal and functional access, inviting visitors to explore the spaces above.

A modern landmark in a historic setting

The building’s setting is in a storied alley where old Western-style homes have historically stood. Here, modern architecture integrates seamlessly, creating new narratives within every corner and crevice. Koma’s design invites visitors to engage with its space, reflecting the blend of cultural heritage and modern innovation.

Interior view showcasing the twisting red spiral stairs through expansive glass windows.

To explore more architectural innovations, check out timber-framed glass link transformations which similarly blend modern design with historical settings.

Busan’s streetscape gains a fresh perspective with Koma, its bold design, including the iconic stairway, reimagining what could have been a simple commercial structure into a significant visual and cultural landmark.

Sunlight filtering through the glass facade, highlighting the red spiral staircase structure.

For those interested in enhancing their own spaces, discover how canvas prints can enhance home décor with stylish and modern touches.

Side angle of the building, emphasizing the spiral staircase and reflective glass surfaces.
Lower perspective view of red spiral stairs, showing intricate design against a glass wall.
Distant view of the building's red spiral staircase blending with urban architecture.
Top view looking down the spiral staircase, revealing geometric patterns and materials.
Daytime exterior shot highlighting the building's red spiral stairs and glass facade.
Vertical slice of the building showing red spiral stairs through a transparent glass section.
Interior photo of the spacious area around the red spiral staircase and glass wall.
Architectural detail emphasizing the staircase spirals within the building's glass facade.
Close-up view of the red stairs' textured surface against the sleek glass backdrop.
Partial exterior of building showing red stairs winding within reflective glass structure.

    Source: archdaily.com

    Frequently asked questions

    What is unique about the Koma building in Busan?

    The “Koma” commercial facility stands out with its striking design, distinctive red spiral stairs, and the integration of modern architecture within a historic setting.

    Who leads the architectural design of Koma?

    Dae-woo Yu of U.GA Architects leads the architectural vision for Koma, with contributions from Soon-jung Shim and Hyo-kyung Kwon.

    What materials are used in Koma’s construction?

    Koma is crafted using Namsun Aluminum, which ensures its durability and a sleek, contemporary look.