Giant ring roof for Japan World Expo - in pictures

  • Construction has begun on a giant ring-shaped wooden roof at Expo 2025 Osaka's site. Expo 2025
    Construction has begun on a giant ring-shaped wooden roof at Expo 2025 Osaka's site. Expo 2025
  • Cranes lower timber frames as work begins to construct the world's largest wooden roofs for Expo 2025 Osaka. Photo: Japan Association for the 2025 World Exposition/ Obayashi Corporation
    Cranes lower timber frames as work begins to construct the world's largest wooden roofs for Expo 2025 Osaka. Photo: Japan Association for the 2025 World Exposition/ Obayashi Corporation
  • Construction work has begun to build a gigantic wooden roof at Yumeshima, a man-made island in southern Japan. Photo: Japan Association for the 2025 World Exposition/ Obayashi Corporation
    Construction work has begun to build a gigantic wooden roof at Yumeshima, a man-made island in southern Japan. Photo: Japan Association for the 2025 World Exposition/ Obayashi Corporation
  • Traditional construction techniques without using nails are being followed. Photo: Japan Association for the 2025 World Exposition/ Obayashi Corporation
    Traditional construction techniques without using nails are being followed. Photo: Japan Association for the 2025 World Exposition/ Obayashi Corporation
  • The giant wooden ringed structure will take about two years to complete. Photo: Japan Association for the 2025 World Exposition/ Obayashi Corporation
    The giant wooden ringed structure will take about two years to complete. Photo: Japan Association for the 2025 World Exposition/ Obayashi Corporation
  • The wooden frames beng lowered into slots demarcated in the foundation. Photo: Japan Association for the 2025 World Exposition/ Obayashi Corporation
    The wooden frames beng lowered into slots demarcated in the foundation. Photo: Japan Association for the 2025 World Exposition/ Obayashi Corporation
  • About 20,000 cubic meters of wood will be used in the construction. Photo: Japan Association for the 2025 World Exposition/ Obayashi Corporation
    About 20,000 cubic meters of wood will be used in the construction. Photo: Japan Association for the 2025 World Exposition/ Obayashi Corporation
  • Renders of the grand roof ring, billed to be the world’s largest wooden ringed structure. Photo: Japan Association for the 2025 World Exposition
    Renders of the grand roof ring, billed to be the world’s largest wooden ringed structure. Photo: Japan Association for the 2025 World Exposition
  • The great ring roof will be covered with greenery and flowers and will offer a view of the Expo site below. Photo: Japan Association for the 2025 World Exposition
    The great ring roof will be covered with greenery and flowers and will offer a view of the Expo site below. Photo: Japan Association for the 2025 World Exposition
  • The wooden ring roof will be in the central area and connect with hundreds of pavilions constructed by countries and companies. Photo: Japan Association for the 2025 World Exposition
    The wooden ring roof will be in the central area and connect with hundreds of pavilions constructed by countries and companies. Photo: Japan Association for the 2025 World Exposition
  • Visitors will be able to walk a couple of kilometres across the wooden roof. Photo: Japan Association for the 2025 World Exposition
    Visitors will be able to walk a couple of kilometres across the wooden roof. Photo: Japan Association for the 2025 World Exposition
  • The roof and surrounding areas are being set up for the 2025 Expo in Yumeshima, Osaka. Photo: Japan Association for the 2025 World Exposition
    The roof and surrounding areas are being set up for the 2025 Expo in Yumeshima, Osaka. Photo: Japan Association for the 2025 World Exposition
  • Visitors will have a grand view of the sea and the expo site. Photo: Japan Association for the 2025 World Exposition
    Visitors will have a grand view of the sea and the expo site. Photo: Japan Association for the 2025 World Exposition
  • Overhead view photo of Yumeshima, the site of the next World Expo. Photo: Expo 2025
    Overhead view photo of Yumeshima, the site of the next World Expo. Photo: Expo 2025