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 …

Bethune-Thompson House Doors Open Cornwall and SDG Counties

Bethune-Thompson House

This home encompasses the original 1784 "poteaux sur sol" (vertical-log) cabin of Loyalist Peter Ferguson, as well as the 1804 house of Reverend John Bethune, Upper Canada’s first Presbyterian minister, and David Thompson, one of Canada’s earliest map-makers. The Ontario Heritage Trust acquired it in 1977, restoring it in the 1980s. It is the oldest residence owned by the Trust.

Tell us your story about this site

  • Parking
  • Washrooms
  • French services available
  • National Historic Site (Canada)
  • Kid-friendly
  • Guided tours available
  • Site has blue and gold provincial plaque

Contact info

19730 John Street
Williamstown, Ontario


Year built: 1784

Dates/hours open

Saturday August 17 – Sunday August 18, 2019
Saturday and Sunday: Noon to 5 p.m.

Bethune-Thompson House 19730 John Street