was damaged after the Great Fire of Toronto of 1849, and was architecturally replaced in 1851. The market was expanded in the early 1900s, with portions of a former Toronto city hall being integrated into the ground broken facility, opened as St. Lawrence Market South in 1902, and a counterpart north wing was constructed in 1904, later architecturally replaced in 1968, and again in 2016.

The market square space was used as the city hall of Toronto