She, in turn, sold her share to her brother, leaving the island divided between the seigneuries of Saint-Paul and La Noue.

Following the British conquest, the other seigneurie was auctioned; the nuns purchased it too in 1769, becoming the sole owners of the island for the next 187 years.

The nuns continued farming until 1956, when they sold the island to the Quebec Home and Mortgage Co. Ltd.[6] In the same year, the provincial government merged it with Verdun.

[8] A second phase, still in accordance with the master plan, was completed the following year, notably including four buildings by Ludwig Mies van der Rohe: three high rise apartment buildings, the first of which, 201 rue Corot, was occupied in 1969, and an Esso filling station of the same vintage.

It is located immediately southeast of the Island of Montreal, from which it is separated by a narrow channel, and north of the La Prairie Bassin.

This lake was actually created by accident as parts of the river known as "water lots" became landlocked during landfill operations in the 1960s and 1970s.

A recent development is the construction of the campus headquarters of Bell Canada on the northern tip of the island.

The campus consists of a cluster of five low-rise buildings,[15] located at the Autoroute 10 and 15 highway interchange at the northerly end of the island.

[citation needed] The Décarie South Expressway (Autoroute 15) runs through Nuns' Island, connecting it to the south bank of the St. Lawrence River via the Champlain Bridge and to the Island of Montreal via the Pont de l'Île-des-Sœurs, part of the Champlain Bridge complex.

The rapid transit station is on the driverless Réseau express métropolitain line between downtown Montreal and Brossard.