Place Royale and place d'Youville
Behind the old Customs House, a bouquet of 35 copper pipes of various sizes is planted in the ground, looking like birthday candles. Each represents one decade. In front of this bouquet, three large rectangular plates feature inscriptions about the history of Montreal. The first one features a quote by François Dollier de Casson, Superior of the Order of the Sulpicians, from the work L'Histoire du Montréal, published in 1672. On the central plate, specimens of the signatures of Native Chiefs who signed the Traité de la Grande Paix de Montréal on August 4, 1701, are engraved. The last plate features a quote by A.J. Broy and John Lesperance, from Picturesque Canada, published in 1882. The last piece of this installation is a narrow strip of glass that crosses the plaza from one end to the other. It serves as a skylight for the museum's crypt. This line includes two inscriptions: "1642", Montreal's year of foundation, and "1992", year of the 350th anniversary of its foundation.