Located in the heart of the vibrant Quartier des Spectacles in Montreal, adjacent to the Centre for Sustainable Development, Parc Hydro-Québec unfolds like a huge metal grill suspended above a naturalized ground surface – a play upon the urban tree grate. Completely permeable, this device permits the creation of growing conditions comparable to that of a forest, allowing rainwater to flow naturally into the soil and protecting the ground from compaction. A composition of native plants forms the groundcover surrounded by a grid of thirty honey locust trees planted unevenly, transforming this space into a vault of freshness.