The Éperon building was constructed to complement the existing historic architecture of the area, and was built to match the proportions of the Royal Insurance Company building that was previously on the site. The building matches the roof lines of the other structures on the Rue de la Commune, and the tower building (pictured) is an easily identifiable element in the museum complex.

Photographs of the architect's models. This building was given an Award of Merit by the Governor General's Awards for Architecture in 1990, and an Award of Excellence by the Ontario Association of Architects Awards in 1988.