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Doors Open Ontario presenting sponsor
Doors Open Ontario presenting sponsor

Cornwall and SDG Counties

event information

Saturday and Sunday, August 15 and 16, 2026, from 10 a.m. to 4 p.m.

Cornwall and SDG Counties are partnering again this year to bring you a memorable Doors Open experience. This annual event offers an incredible opportunity to visit some of the region’s most fascinating historical, cultural and architectural sites. From heritage landmarks and museums to modern marvels, each location tells a unique story about the region’s rich history and vibrant community. Whether you're a history buff, an architecture enthusiast, or simply looking for a family-friendly adventure, Doors Open Cornwall and SDG Counties is your gateway to discovery.

Note: Some site hours may differ. Please refer to each site's page for hours of operation for Doors Open 2026

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St. Raphael's RuinsDoors Open Cornwall and SDG Counties

  • In-person Doors Open Ontario

St. Raphael's Ruins

In 1970, a fire consumed the church of St. Raphael’s, one of the earliest Roman Catholic churches in English-speaking Canada. Fortunately, the outer walls were spared and today its impressive scale and fine masonry work continue to attract tourists to the site. The ruins were declared a National Historic Site in 1999.

  • French services available
  • Guided tours available
  • Kid-friendly
  • National Historic Site (Canada)
  • Parking
  • Partial wheelchair access
  • Self-guided tours available
  • Site is protected by the Ontario Heritage Trust
  • Washrooms
  • Photography allowed
  • Rental opportunities

Contact info

19998 County Road 18
South Glengarry, Ontario
Email: ednjudyallinott@comcast.net
https://saintraphaelsruins.com

Architecture

Year built: 1821
Building type: Place of worship

Dates/hours open

Aug 15 - Aug 16

Trinity ChurchDoors Open Cornwall and SDG Counties

  • In-person Doors Open Ontario

Trinity Church

A church has been on this site since 1784, when Loyalists first settled here. The current church dates to 1876, dedicated to Bishop John Strachan. Built in the Gothic style, the building features marble floors, stained-glass windows, a Casavant organ and plaques and memorials to early Cornwall citizens. Outside, the churchyard features graves dating back to the late 1700s.

  • Guided tours available
  • Kid-friendly
  • Parking
  • Partial wheelchair access
  • Washrooms
  • Photography allowed
  • Rental opportunities
  • Veterans/Military heritage

Contact info

105 Second Street West
Cornwall, Ontario
Email: daphnefhall@gmail.com
https://www.saintlawrenceparish.org

Architecture

Year built: 1876
Building type: Place of worship

Dates/hours open

Aug 15 - Aug 15

Upper Canada Migratory Bird SanctuaryDoors Open Cornwall and SDG Counties

  • In-person Doors Open Ontario

Upper Canada Migratory Bird Sanctuary

A nature lover’s paradise, the Upper Canada Migratory Bird Sanctuary Campground is filled with abundant wildlife and over 150 various bird species. Visitors and campers can explore the sprawling hiking trails and even handfeed wild birds!

  • French services available
  • Full wheelchair access
  • Kid-friendly
  • National Historic Site (Canada)
  • Parking
  • Self-guided tours available
  • Washrooms
  • Photography allowed

Contact info

5591 Morrisons Road
Ingleside, Ontario
Email: ucmbs@parks.on.ca
https://www.stlawrenceparks.com/to-do/camping/bird-sanctuary-campground

Architecture

Building type: Attraction

Dates/hours open

Aug 15 - Aug 16

YourTV CornwallDoors Open Cornwall and SDG Counties

  • In-person Doors Open Ontario

YourTV Cornwall

Take a behind-the-scenes look at this local television station! From concept to credits, learn how some favourite made-in-Cornwall shows are made, and receive a guided tour of the studio. Sit on the sets that are onscreen each week, try out an interview or even operate a camera. Learn about the important role that community television plays in Cornwall and area.

  • Adaptive reuse
  • French services available
  • Guided tours available
  • Kid-friendly
  • Parking
  • Partial wheelchair access
  • Washrooms
  • Photography allowed

Contact info

517 Pitt Street
Cornwall, Ontario
Email: gabriel.riviere-reid@cogeco.com
https://www.yourtv.tv/cornwall

Architecture

Building type: Commercial Studio

Dates/hours open

Aug 15 - Aug 15