While this site has participated in Doors Open Ontario in the past, it is not part of the current season’s program. Please check the Home page for this year’s events and participating sites.

Sir John Johnson Manor Housein-person Doors Open Cornwall and SDG Counties

  • In-person
  • Guided tours available
  • Kid-friendly
  • National Historic Site (Canada)
  • Parking
  • Partial wheelchair access
  • Washrooms
  • Photography allowed
Sir John Johnson Manor House

Along the Raisin River lies one of the oldest homes in Ontario. This Georgian-style house was built for Sir John Johnson (a soldier, Loyalist and public servant) between 1784-92. This site was chosen because it is a natural location for water-powered mills. The house is now a National Historic Site, dedicated to preserving local history through archives and tours.

Contact info

19692 William Street
Williamstown, Ontario
E-mail: sirjohnjohnsonmanorhouse@bellnet.ca


Year built: Begun in 1784
Building type:Historical landmark
Architectural style:GeorgianVictorian

Dates/hours open

Aug 20, 08:00am - Aug 20, 03:30pm

Sunday only: 8 a.m. to 3:30 p.m.