Antique Shows Ontario Canada. Flamboro is the name of Canada's original outdoor antique show. The name came from the township the show originally started in, but as the show expanded, first in size and then in frequency, it also moved location. Flamboro Antique Show has the distinct privilege of being the opening and closing outdoor show of the season in Ontario. The 2009 season starts on May 9, 2009 at the Brampton Fairgrounds, continues on July 4, 2009 at the Milton Fairgrounds, with the third show going on Aug 22, 2009 back at the Brampton Fairgrounds. The final show for 2009 is on Oct 3, 2009 at the Milton Fairgrounds. All shows are on Saturday, Dawn to 4:00 p.m.