Ammonite-Inspired Spiral Shapes Pavilion for Expo 2025 Osaka
The PASONA NATUREVERSE Pavilion, designed by the design labo Inc. for Expo 2025 Osaka, is conceived as a spiral structure inspired by the form of an ammonite. With a diameter of 43 meters, the pavilion establishes a spatial framework where themes of life, ecology, and the interconnection between humanity and nature are explored.
The ammonite form serves as both architectural reference and symbolic gesture, linking the micro- and macro-scale dimensions of natural systems. Visitors are guided along a spiraling path that evokes continuity and cyclical movement, while the geometry reinforces the concept of humanity as part of a broader ecological context.
all images courtesy of the design labo Inc.
design labo integrates sustainability with Cultural Context
For the design labo studio, environmental performance is integral to the design. The pavilion employs a water-based cooling system in which a thin film flows across the roof surface, promoting evaporative cooling and reducing the need for air-conditioning. Rainwater, collected alongside the rooftop water, is reused within the building for non-potable functions, reducing reliance on external resources.
Following the Expo, the pavilion is scheduled to be dismantled and reassembled on Awaji Island, a site recognized as one of Japan’s important ammonite fossil beds. This relocation extends the life of the structure and establishes a continuity between form, place, and geological history. Through its material strategy, environmental systems, and symbolic geometry, the PASONA NATUREVERSE Pavilion integrates sustainability with cultural and ecological reference, presenting architecture as a medium that bridges natural history and contemporary design practice.
the PASONA NATUREVERSE Pavilion stands as a 43-meter ammonite-inspired spiral
designed by the design labo Inc. for Expo 2025 Osaka
the spiral form guides visitors through cyclical pathways
architecture and ecology converge in a symbolic ammonite shape
the design emphasizes ecological awareness through spatial form
the ammonite form creates continuity between past and present
the spiraling geometry recalls continuity and natural cycles
after the Expo, the pavilion will be dismantled and relocated
project info:
name: PASONA NATUREVERSE
architect: the design labo Inc. / Satoshi Itasaka | @itasaka.satoshi
location: Expo 2025 Osaka, Japan
client: Pasona Group Inc.
design supervision: Maeda Corporation First-Class Architects Office
construction: Maeda Corporation
site area: 3,514.42 sqm
building area: 2,263.83 sqm
total floor area: 2,457.70 sqm
structure: Steel structure
floors: 2 (above ground)
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edited by: christina vergopoulou | designboom
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