The $3.7 billion transformation of Sydney's Circular Quay precinct will include a new public square near George Street's northern tip, designed by British architect Sir David Adjaye and contemporary Aboriginal artist Daniel Boyd.

A 20-metre-high perforated steel canopy supported by a single column will stretch out from a new community building and shield the 800-square-metre open space on the site of the St George Bank tower, next to Mirvac/EY's 200 George Street, in the next step of the decade-long evolution of the Harbour City's public gateway.