ALGAETECTURE is a pavilion which attempts to tackle the polluted air of Rotterdam city. The carbon dioxide of large industries and the Port of Rotterdam will be used as a input for the pavilion in order to plant algae. The functionality of the pavilion during the WORLD EXPO 2025 will be focussed on the experience, the awareness and benefits of algae. By making people aware of the benefits of algae at different levels it is important to show the process of algae and taste algae itself, which will be served in different forms in the restaurant. The fluidity of the different functions will offer user groups to have different experiences in the pavilion. This fluidity will also be reflected in the exterior form of the pavilion as a landscape that is integrated in its environment. Secondly the pavilion will function as a algaefarm and biolab which produces biomass and biofuels for the city of Rotterdam. After the World Expo has ended, these functions will remain and locals can use the landscape as a community space.