Southwestern Ontario is the geographic area of Ontario extending from the Bruce Peninsula and Lake Huron on the north, the Lake Huron shoreline on the west, the Lake Erie shoreline on the south, and neighbouring the Toronto-Hamilton-Niagara Golden Horseshoe region on the east. Its principal population centres are on the '401 corridor' cities - Windsor and Chatham-Kent, London and St Thomas, Woodstock and Ingersoll, Kitchener-Waterloo, Cambridge and Guelph, with Sarnia, the western terminus of highway 402; Brantford, on highway 403, and Stratford. Other significant centres are Collingwood and Owen Sound, Goderich, Tillsonburg and Simcoe.
There are gas stations here. The do not sell beer :-(