The following item is from a recent newsletter, available at this link, of the Architectural Conservancy of Ontario:
CBC Radio’s Day Six examines how remnants of Canada’s first Parliament Buildings were found underneath a Toronto car wash
The car wash and dealership at King and Parliament Streets has long been known as the site where Upper Canada’s first Parliament Buildings once stood. But those buildings burned down twice, and it wasn’t known if any remnants remained. In the year 2000, archaeologist Ron Williamson’s firm, Archaeological Services Inc., was hired by the City of Toronto to determine if any of the original brick buildings had survived. The subsequent excavation was spurred on in part by Rollo Myers, local history activist and the former manager of Architectural Conservancy Ontario, who investigated historic documents in depth, used 3D modeling to predict the location of possible remains, and pushed the City to investigate. In October of that year, Williamson’s team discovered charred floorboards, limestone footings and fragments of ceramics, during an investigative dig.
You can read the CBC article and listen to the full interview with Ron and Rollo here: http://www.cbc.ca/radio/day6