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.

Nelles Manor Museumin-person Doors Open Grimsby

  • In-person
  • Guided tours available
  • Site has blue and gold provincial plaque
Nelles Manor Museum

Built by United Empire Loyalist Colonel Robert Nelles, this stone mansion is the oldest continuously inhabited house between Niagara-on-the-Lake and Kingston. The house has passed through four successive generations. In 2016, owners Barry and Linda Coutts generously donated it to a charitable, non-profit corporation. Now run by volunteers, the manor has been converted into a museum and heritage house.

Contact info

126 Main Street West
Grimsby, Ontario



Year built: 1788
Building type:Historical landmarkHistorical houseMuseum
Architectural style:Georgian

Dates/hours open

Sep 21, 10:00am - Sep 21, 04:00pm

Saturday: 10 a.m. to 4 p.m.