Mirage in Yumeshima, This project is a public restroom for the EXPO 2025. In response to the context of a plaza surrounded by iconic architectural landmarks, this structure was conceived not as a clearly defined form, but as something that recedes into the background—an architecture that allows only the phenomena of its surroundings to come into focus.
Courtesy of PONDEDGE + f a r m
As a restroom located in a highly open environment, the aim was to achieve a space that is both bathed in light and carefully considers the need for privacy. Its plan spreads out in a web-like pattern, and affixed to its steel frame are 3D-printed polycarbonate panels that flexibly adapt to variations along the circular axis.
Courtesy of PONDEDGE + f a r m
Rather than adopting a self-contained, vessel-like form often associated with 3D printing, the design was positioned as an extension of conventional architectural methods. As a result, a panelized system was chosen, leveraging the adaptability of 3D printing to accommodate complex geometries and dimensional shifts.
Courtesy of PONDEDGE + f a r m
The exterior perimeter panels are printed with the coping, designed to obscure the presence of the roof entirely. While the polycarbonate panels run along the circular direction, the radial elements—such as walls and low partitions—are finished with Galvalume steel sheets, ensuring a consistent tone and reflective quality of light.
Courtesy of PONDEDGE + f a r m
Inside, the ceiling is composed of soft aluminum insulation, creating a gently glowing surface of light. In the accessible restroom, dual layers of 3D-printed walls generate a full-height luminous plane.
Courtesy of PONDEDGE + f a r m
The wave-shaped 3D-printed panels inherently contain distortions from the fabrication process, which are intentionally embraced as part of the architectural expression. The 3D-printed panels, which combine reflectivity and translucency, intricately capture surrounding light, allowing the building’s presence to emerge through its relationship with the environment. Appearing only during the exhibition, this architecture then continues its journey to another place. Veiled in transient light, it evokes a mirage floating above an island.
Project Info
Architects: PONDEDGE, f a r m
Country: Japan, Osaka
Area: 101 m²
Year: 2025
Photographs: Courtesy ofPONDEDGE+ f a r m
Lead Team: Jumpei Suzuki, Rui Murabe, Akiko Fujimoto
Engineering & Consulting > Other: VOID + ND3M
Engineering & Consulting > Structural: Ohno Japan
Engineering & Consulting > Mep: ZO Consulting Engineers
Madeline Brooks is a Projects Editor at Arch2O, where she has been shaping and refining architectural content since March 2024. With over a decade of experience in editorial work, she has curated, revised, and published an array of projects covering architecture, urbanism, and public space design. A graduate of the Harvard University Graduate School of Design, Madeline brings a strong academic foundation and a discerning editorial eye to each piece she oversees. Since joining Arch2O, she has played a pivotal role in shaping the platform’s editorial direction, with a focus on sustainability, social relevance, and cutting-edge design. Madeline excels at translating complex architectural ideas into clear, engaging stories that resonate with both industry professionals and general readers. She works closely with architects, designers, and global contributors to ensure every project is presented with clarity, depth, and compelling visual narrative. Her editorial leadership continues to elevate Arch2O’s role in global architectural dialogue.