Doors Open Ontario

Doors Open Ontario had another successful season! Nearly 500,000 people visited sites in communities across the province. Thanks to our sponsors, partners and volunteers for their support, and to all who participated. Stay tuned for information about next season …

Nelles Manor Museum Doors Open Grimsby

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.

Tell us your story about this site

  • Guided tours available
  • Site has blue and gold provincial plaque

Contact info

126 Main Street West
Grimsby, Ontario


Year built: 1788
Architectural style: Georgian
Building type: Historical landmark, Historical house, Museum

Dates/hours open

Saturday September 21, 2019
Saturday: 10 a.m. to 4 p.m.

Nelles Manor Museum 126 Main Street West