Relic Linear Park is a community-led vision developed by The Grange Community Association in partnership with the City of Toronto and Campbell House Museum. Guided by the Grange Green Plan and the Relic Park Prospectus, the Relic Linear Park System is an innovative public realm enhancement project in the Grange Park neighbourhood that upgrades existing green spaces and provides opportunities to create new ones. Conceived as a green pedestrian path with feature parkettes and focal points stretching from Campbell House Museum to the intersection of Dundas and McCaul streets, the linear park will be held together and made coherent by the presence of re-assembled relic stones rescued from demolished historic Toronto buildings, upgraded plantings, and common paving treatment along its entire length.

ERA played a key role in leading the master plan exercise of the 2019 Relic Park Prospectus document under the leadership of Principal Edwin Rowse. In 2022, ERA was retained by the Campbell House Foundation as the landscape and conservation architect, in collaboration with Edwin Rowse Architecture, for the implementation of the Southern Gateway, the first part of the Relic Linear Park, located at the intersection of Queen Street West and Simcoe Street.

Completed in 2023, the Southern Gateway has provided the community with a new flexible gathering space located within an underused boulevard section of Simcoe Street. Key features include a newly planted boulevard, salvaged relic stone pieces transformed into sculptural seating elements, and iconic signage that marks the gateway to the Relic Linear Park system.