The Brazilian pavilion at Dubai Expo 2020 promises to embody the ecological and biological challenges specific to this vast territory. This vast construction evokes a floating nest of tree branches, and will be placed on six earth walls. Inside, exhibitions, a conference auditorium, installations. Stairs will lead to the huge inner room, making the inverted structure a levitating bubble. Self-sufficient, the building must be able to produce its own electricity and naturally filter the water from its fountains to ensure the ecological management of resources.