08/11: Osaka
Expo ’70

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The 1970 World Exposition in Osaka—Expo ’70—was the first world’s fair held in Japan and remains one of the most ambitious statements of postwar modernity. Master planned by architect Kenzo Tange with the Japan World Exposition Association, the site was conceived as a “Festival Plaza,” a vast experimental stage roofed by the world’s largest space frame. It brought together leading Japanese architects of the Metabolist movement—Kisho Kurokawa, Kiyonori Kikutake, Arata Isozaki—alongside international collaborators, producing a landscape of visionary pavilions that merged technology, spectacle, and utopian ideals. Promoted as a collective rehearsal for the “future society,” the Expo projected rapid technological progress, new forms of communication, and the promise of interconnection. Today, these ambitions are recalled in archival form through an exhibition housed in one of the few surviving pavilions at the Expo ’70 Commemorative Park.

At the centre of the original Expo grounds stood Tarō Okamoto’s Tower of the Sun, a 70-metre-high totem embodying his belief in primitivism, play, and the vitality of life. Its three faces symbolise past, present, and future: the Black Sun on the back, the central Face of the Sun (an image resembling Brancusi’s Kiss—yet sparing intimacy in favour of monumental ego), and the gilded mask at the top. Inside, the Tree of Life installation once traced the evolutionary story of species, rising through the tower’s core. With the Festival Plaza dismantled and the tower’s interior no longer accessible, the structure today survives only as monument, detached from the everyday architecture of use. Standing before it, the temporal metaphors resonate uneasily: the golden face still gazes forward, the present face confronts us directly, but the Black Sun of the past is harder to place—vanished, or perhaps deliberately skipped over. Revisiting the site is like stepping into a layered time capsule: returning to the past to see their future, only to confront our present, still caught between utopian promises and unresolved contradictions.

Among the archival models of the Expo grounds, we also spotted Arthur Erickson’s Canadian Pavilion—a reminder of another nation’s vision of the future, now frozen in the past.



The Kiss, Brâncuși, 1907





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