Henry Morgan Building (Maison Morgan) is home to the Hudson's Bay Company flagship store in Montreal at 585 Saint Catherine Street West in Downtown Montreal. Its is named for Scottish-born Montreal retailer Henry Morgan.
Built from 18-1891 by American architect John Pearce Hill (1849-c.1920?), the four storey Neo-Romanesque architecture building used imported Scottish Red sandstone (Old Red Sandstone) and was first built for Morgan's Department Store (it was rebranded as La Baie in 1972 which HBC acquired in 1960). The site was once occupied by terrace type townhouses along Saint Catherine, Union and Alymer built with stones from the ruins of the 1849 Parliament Building as well as the southwest corner formerly the home of Dr William Hales Hingston (c. 1849), mayor of Montreal from 1875 to 1877.
The building was modified in 1923 (eight floor Beaux-Arts style addition cladded with red stone to match the original store) and 1964 with a 8-storey modernist annex along De Maisonneuve Boulevard. The last additional is mostly windowless with windows only on ground level as well as four arch features along De Maisonneuve and Alymer.
The store is served by Montreal Metro McGill station with an entrance on avenue Union.