The Cité de l'Océan et du Surf Museum intends to raise awareness of oceanic issues and explore educational and scientific aspects of the surf and sea and their role upon our leisure, science, and ecology. The project, designed in collaboration with Solange Fabião, is comprised of a museum building, exhibition areas, and a plaza, within a larger master plan. The building form derives from the spatial concept "under the sky"/"under the sea". A concave "under the sky" shape creates a central gathering plaza, open to sky and sea, with the horizon in the distance. The convex structural ceiling forms the "under the sea" exhibition spaces. This concept generates a unique profile and form for the building, and through its insertion and efficient site utilization, the project integrates seamlessly into the surrounding landscape.