One Canada Square stands at 235 metres above ground level and containing 50 storeys. The building, topped by a flashing aircraft-warning light, is visible from almost any high vantage point in Greater London.The 36-foot lobby has been made with Italian and Guatemalan marble.

The ground floor, foyer area and basement levels of One Canada Square are open to the general public, having an underground shopping area and a transport interchange from Canary Wharf tube and Docklands Light Railway stations. Access from the basement also links to Canada Square shopping mall.