The Toronto Islands represent the antithesis to the urban environment, where landscape takes priority over architecture, and any intervention must be positioned carefully within the context of severe flooding, vital animal habitat and an eroding shoreline. The given site of Olympic Island is distinguished by the canopy of tall Eastern Cottonwood and thirsty Hybrid Crack Willows, whose extensive root networks are critical to the resilience and survival of the island. As such, the architectural strategy preserves all the existing trees on site, with carefully placed buildings reduced to rational and simple volumes. The massing avoids the conventional approach to aquatic centers of singular volumes and an all-encompassing enclosure. The act of moving between buildings and experiencing the landscape is most important. Hence the massing consists of several compact rectilinear volumes with individual enclosures, arranged according to the shading, privacy, temperature and occupancy demands of therein clustered programs.