Photographer: Expo Osaka 2025 | ArchDaily

How to Measure the Life Cycle of a Construction Material?

Agustina Iñiguez — Tue, 31 Mar 2026 07:30:00 +0000

As a major driver of natural resource consumption, energy use, and greenhouse gas emissions, the construction industry has a significant impact on the environment, consuming 32% of global energy and contributing to 34% of global CO₂ emissions. Building materials play a crucial role in shaping the built environment. Through principles of circular economy, renewable and self-sufficient solutions, and technological innovations, analyzing the environmental performance of each material highlights the opportunity to review and assess the different stages of its life cycle.

The Afterlife of Expo Osaka’s Grand Ring: How the Timber Structure Is Being Reused Across Japan

Antonia Piñeiro — Wed, 18 Feb 2026 06:30:00 +0000

Exhibitions can be an opportunity to extend architectural discourse beyond professional circles, opening conversations with broader publics and serving as an interface between architecture and society. Within this concept, major international events such as the Osaka International Expo 2025 and the Venice Architecture Biennale have adopted the idea of the circular economy as one of their organizational objectives. The idea of circularity in events can be reflected in, for example, their energy consumption, the impact of the displacement they generate, their waste, or the useful life of their infrastructure. The site destined for the last World Expo, held in Osaka from 13 April to 13 October 2025, was surrounded by a massive timber structure designed by Sou Fujimoto Architects, one of the world's largest wooden constructions. The Japan Association for the 2025 World Exposition committed to reusing building materials "as much as possible," with concrete plans for their reuse to be finalized by March. In the meantime, some relocation alternatives are already emerging for the pieces of the World Expo structure.

Designing the Future, Again: What the 55-Year Return of the World Expo to Osaka Reveals

Jonathan Yeung — Thu, 01 Jan 2026 07:30:00 +0000

The 2025 Osaka Expo has captured widespread attention—not only for its architectural ambition and spectacle, but also for breaking records and generating controversy. Its most iconic feature, a monumental timber ring designed by Sou Fujimoto, has already made headlines as a Guinness World Record-breaking wooden structure. Built on the reclaimed island of Yumeshima, the site has attracted praise and critique in equal measure. Beyond its awe-inspiring 2-kilometer circumference—parts of which extend dramatically over the water—the structure has also drawn concerns, including questions about health & safety, extreme heat, and swarms of insects that may affect the visitor experience.

First Photos Revealed of 'Grand Ring' by Sou Fujimoto for Expo 2025 Osaka

Nour Fakharany — Wed, 28 Aug 2024 05:30:00 +0000

In preparation for Expo 2025 Osaka, Kansai, Japan, The "Grand Ring," designed by renowned architect Sou Fujimoto, has reached a significant milestone. As of August 2024, the wooden construction of this structure is now complete, fully connecting the 2-kilometer ring into a continuous loop. This achievement is a crucial step in the development of the Expo site on Yumeshima, an artificial island on Osaka's waterfront, where the Expo will take place from April 13 to October 13, 2025.