Commemorates the life and accomplishments of one of the Fathers of Confederation, Sir George-Étienne Cartier. The reconstitution of the two adjoining homes of the Cartier family also serves to recall the architectural heritage left by the upper middle class of 19th century Montreal. The site also provides insight into the mores of this social class, using the house's Victorian décor as a backdrop for performances and re-enactments that vary with each passing season.