Montreal Clock Tower, Clock tower monument in Old Port, Canada

The Montreal Clock Tower is a 45 m white concrete tower on the Quai de l'Horloge in the Old Port, with a square shaft, four translucent clock faces 3.7 m in diameter, and a stepped roof topped by a small spire. A smaller 12 m tower, connected by a 13 m white curtain wall, stands beside it. The clock faces were made by Gillett & Johnston of Croydon, England.

Construction began in 1919 when Edward, Prince of Wales, laid the foundation stone; the tower opened in 1922, designed by engineer Paul Leclaire for the Montreal Harbor Commission. It commemorated merchant seamen lost in the First World War and marked the port's grain-export era. Grain sheds and the curtain wall were demolished in the 1970s, and the Old Port Society restored the tower in 1984.

The tower is also called Sailors' Memorial Tower, and a plaque on its north face honours merchant seamen lost in the First World War. Since 1980 it has housed a tourist interpretation centre, and its stairwell serves as an exhibition route up to an observatory installed where the harbour guiding lamp once stood.

Access involves climbing 192 steps to reach an observation deck that overlooks the river and nearby bridge. Visitors should prepare for moderate physical effort during the ascent, though the climbing is manageable for most people.

The clock mechanism was manufactured in Croydon, England and operates using the same technical principles as the famous clock at Elizabeth Tower in London. This British craftsmanship gives the mechanism a direct connection to one of the world's most renowned timepieces.