Breathing new life into an outdated port installation: Provencher_Roy’s mission in the Old Port of Montréal (Québec, Canada). An iconic 65-metre tower and its belvedere overlooking the waterway. In addition to overseeing Montréal history, the Tower becomes a new destination, an attractive place inviting visitors to stroll. With a multipurpose vocation, this space in the sky is accessible to the public and rented out for events. A wooden helicoidal staircase visible from the exterior extends from the observatory towards the sky, inviting visitors to climb higher.