From Battlefields to Bird Sanctuaries: Family Adventures at Doors Open Cornwall & SDG Counties

What do a War of 1812 battlefield, historic jail, hydroelectric dam, television studio and migratory bird sanctuary have in common? Families can explore them all during Doors Open Cornwall & SDG Counties on Saturday and Sunday, August 15 and 16, 2026, from 10 a.m. to 4 p.m. This free, two-day event invites visitors inside 29 historical, cultural, architectural and natural landmarks across Cornwall and the surrounding United Counties of Stormont, Dundas and Glengarry. Keep reading for the complete list of participating sites and our full interview with one of the event organizers, including advice for planning your route, finding family-friendly stops and enjoying local refreshments along the way.

This year’s Doors Open Cornwall & SDG Counties lineup offers an engaging mix of returning favourites and new discoveries. Visitors can step inside original jail cells, tour backstage at a professional theatre, learn how hydroelectricity is generated, explore pioneer buildings, admire heritage churches and experience the region’s connections to the War of 1812 and the creation of the St. Lawrence Seaway. Two new additions highlighted by organizers are the Crysler’s Farm Battlefield Memorial Building and Galop Canal Iroquois Landing Marina. The Historic SDG Jail has also introduced new displays, gallows, mural artwork and an expanded selection of guided and self-guided tours. Part of the province-wide Doors Open Ontario program led by the Ontario Heritage Trust, Doors Open Cornwall & SDG Counties gives families, students and curious explorers an opportunity to experience local history and science outside the classroom.

Located along the St. Lawrence River in Eastern Ontario, the City of Cornwall offers a vibrant waterfront, walkable downtown and rich history. Surrounding the city are the United Counties of Stormont, Dundas and Glengarry (SDG Counties), a collection of rural communities known for their scenic countryside, picturesque villages, French-speaking and Scottish heritage, and warm hospitality. The region is approximately one hour and 20 minutes from Ottawa, 90 minutes from Montreal and four to four and a half hours from Toronto. Families travelling by train can also take advantage of Canada Strong Pass discounts on eligible VIA Rail travel. Since participating sites are spread across Cornwall and several surrounding communities, families should check individual hours and plan their route before leaving home.

Participating Sites for Doors Open Cornwall & SDG Counties 2026

• Aultsville Theatre – 2 St. Lawrence Drive, Cornwall, ON K6J 0B7
• Bishop’s House of Glengarry – 20019 County Road 18, St. Raphael’s, ON K0C 2P0
• Carman House Museum – 5895 County Road 1, Iroquois, ON K0E 1K0
• Cline House Gallery & Studio – 204 Second Street East, Cornwall, ON K6H 1Z9
• Cornwall Armoury – 505 Fourth Street East, Cornwall, ON K6H 1W9
• Cornwall Community Museum (The Wood House) – 160 Water Street West, Cornwall, ON K6J 2R2
• Cornwall Historical Walking Tour – Pick up a map and begin at the Cornwall Tourism Information Centre, 100 Water Street East, Cornwall, ON K6J 1H1
• Cornwall Public Library – 45 Second Street East, Cornwall, ON K6H 1Y1
• Crysler’s Farm Battlefield Memorial Building – 13740 County Road 2, Morrisburg, ON K0C 1X0
• Galop Canal Iroquois Landing Marina – 50 Boat House Road, Iroquois, ON K0E 1K0
• Glengarry Celtic Music Hall of Fame – 19687 William Street, Williamstown, ON K0C 2W0
• Glengarry Nor’Westers and Loyalist Museum – 19651 County Road 17, Williamstown, ON K0C 2W0
• Glengarry Pioneer Museum – 1645 County Road 30, Dunvegan, ON K0C 1J0
• The Heritage Centre – 14 Victoria Street, Chesterville, ON K0C 1H0
• Historic SDG Jail – 11 Water Street West, Cornwall, ON K6J 1Y6
• Judy Neville British Home Child Museum – 13740 County Road 2, Morrisburg, ON K0C 1X0
• Lost Villages Museum – 16361 Fran Laflamme Drive, Ault Park, Long Sault, ON K0C 1P0
• Nativity Co-Cathedral – 300 Montreal Road, Cornwall, ON K6H 4Z5
• Priest’s Mill Arts Centre – 16 Mill Square, Alexandria, ON K0C 1A0
• Saunders Hydro Dam Visitor Centre – 2500B Second Street West, Cornwall, ON K6J 1B8
• Sir John Johnson Manor House – 19692 William Street, Williamstown, ON K0C 2W0
• St. Columban’s Catholic Church – 36 Fourth Street West, Cornwall, ON K6J 2R6
• St. Finnan’s Basilica – 72 St. Paul Street, Alexandria, ON K0C 1A0
• St. John the Evangelist Anglican Church – 20788 South Service Road, Lancaster, ON K0C 1N0
• St. John’s Presbyterian Church – 28 Second Street East, Cornwall, ON K6H 1Y3
• St. Raphael’s Ruins – 19998 County Road 18, South Glengarry, ON K0C 2P0
• Trinity Church – 105 Second Street West, Cornwall, ON K6H 1W7
• Upper Canada Migratory Bird Sanctuary – 5591 Morrisons Road, Ingleside, ON K0C 1M0
• YourTV Cornwall – 517 Pitt Street, Cornwall, ON K6J 3R4

*Although the main event runs from 10 a.m. to 4 p.m., individual hours may vary, and some locations are open on only one of the two days. Visitors should confirm the details for each site before finalizing their route.

An Interview with an Organizer Behind Doors Open Cornwall & SDG Counties

Check out our interview with Cory Hagen, Administrative Assistant – Planning & Economic Development, United Counties of Stormont, Dundas and Glengarry, for more details on what you can expect.

Which new sites are joining Doors Open Cornwall & SDG Counties in 2026, and what can visitors discover at them?

We're thrilled to welcome two new sites to Doors Open Cornwall & SDG Counties this year! Whether you're a first-time visitor or a returning explorer, these exciting additions offer even more opportunities to uncover the region's fascinating history and heritage.

Crysler's Farm Battlefield Memorial Building – 13740 County Road 2, Morrisburg (located directly west of Upper Canada Village)

• Discover the story behind one of the most significant battles of the War of 1812. Home to engaging exhibits, artifacts, and interpretive displays, the memorial building brings to life the Battle of Crysler's Farm and the pivotal role it played in defending Upper Canada.

Galop Canal Iroquois Landing Marina – 50 Boathouse Road, Iroquois

• Explore the rich history of the Galop Canal, once an essential part of the St. Lawrence Seaway's predecessor, all while enjoying one of the region's most picturesque waterfront settings.

Honourable Mention

The Historic SDG Jail has undergone some huge upgrades, including a new bathroom with incredible mural artwork done by a very talented local artist, Robert Lariviere. We also have brand new displays, gallows, and visitors will be able to explore our new self-guided tour, which is now offered throughout our summer season in addition to our newly revamped guided tour. 

Which new sites are joining Doors Open Cornwall & SDG Counties in 2026, and what can visitors discover at them?

We're thrilled to welcome two new sites to Doors Open Cornwall & SDG Counties this year! Whether you're a first-time visitor or a returning explorer, these exciting additions offer even more opportunities to uncover the region's fascinating history and heritage.

Crysler's Farm Battlefield Memorial Building – 13740 County Road 2, Morrisburg (located directly west of Upper Canada Village)

• Discover the story behind one of the most significant battles of the War of 1812. Home to engaging exhibits, artifacts, and interpretive displays, the memorial building brings to life the Battle of Crysler's Farm and the pivotal role it played in defending Upper Canada.

Galop Canal Iroquois Landing Marina – 50 Boathouse Road, Iroquois

• Explore the rich history of the Galop Canal, once an essential part of the St. Lawrence Seaway's predecessor, all while enjoying one of the region's most picturesque waterfront settings.

Honourable Mention

The Historic SDG Jail has undergone some huge upgrades, including a new bathroom with incredible mural artwork done by a very talented local artist, Robert Lariviere. We also have brand new displays, gallows, and visitors will be able to explore our new self-guided tour, which is now offered throughout our summer season in addition to our newly revamped guided tour. 

With locations participating across the region, what kind of attendance are you anticipating this year?

We’re expecting a strong turnout for this year’s Doors Open Cornwall & SDG Counties, with 25 sites—and counting—participating across the region. With locations throughout both Cornwall and the surrounding SDG Counties, visitors will have plenty of options to explore over the two-day event.

Excitement is already building. Last year, the Historic SDG Jail alone welcomed more than 300 visitors between Saturday and Sunday, and we’re hoping to surpass that number this year. It was an extremely hot weekend last year, followed by heavy rain on the Sunday. It didn’t stop visitors from making it out—but we’re hoping for some cooler and sunny days for this year! With two new sites joining the lineup, returning visitors will have fresh experiences to enjoy, while first-time attendees will have even more opportunities to discover the history, architecture and stories of our region.

Since the sites stretch across Cornwall and several SDG Counties communities, how would you recommend planning a route? Are there any walkable or driveable clusters visitors should consider?

With sites located across Cornwall and several SDG Counties communities, my biggest recommendation is to plan your visit in advance. Browse the list of participating sites, choose the ones that interest you most, and map out a route before you head out. It's also a good idea to check each site's hours of operation, as some locations may have different opening times throughout the weekend.

Cornwall offers a fantastic walkable experience. Visitors can park and spend a few hours exploring the Historic SDG Jail, the Cornwall Community Museum, and the Cornwall Public Library, all located within easy walking distance of one another. You can also walk down the beautiful Riverside Trail, located along the St. Lawrence River. It will take you east to Aultsville Theatre. If you wanted to—you can rent a bike from Marina 200, located near the Cornwall Civic Complex, and cycle west along the trail all the way to the Saunders Hydro Dam Visitor Centre.

For those who enjoy a scenic drive, following County Road 2 along the St. Lawrence River through South Dundas and South Stormont makes for a memorable day trip. Along the way, you can stop at sites such as the Lost Villages Museum, the Carman House Museum, the Judy Neville British Home, Crysler’s Farm, and several other participating locations while enjoying beautiful waterfront views.

In the Glengarry region, the Bishop’s House and St. Raphael’s Ruins are located across from one another and are both incredible sites. A 5 minute drive will take you to Williamstown, where you can park and walk around the beautiful village. The Williamstown Horticultural Society has been maintaining the gardens in Williamstown for 50 years! In walking distance of each other in Williamstown is the Glengarry Celtic Music Hall of Fame, Sir John Johnson Manor House, and the Glengarry Nor’Westers and Loyalist Museum. 

No matter which route you choose, grouping sites by area and planning your day in advance is the best way to make the most of everything Doors Open Cornwall & SDG Counties has to offer.

Which participating locations would you particularly recommend to families visiting with children?

While every Doors Open site has something unique to offer, there are several that are especially well-suited for families with children.

The Saunders Hydro Dam Visitor Centre is always a favourite, offering hands-on exhibits, interactive displays, and an up-close look at how hydroelectricity is generated on the St. Lawrence River. It's a fun and educational stop that keeps kids engaged while they learn.

The Historic SDG Jail is another must-visit. Stepping inside a real 19th-century jail is an experience unlike any other, and families can explore original cells, hear fascinating stories of former inmates, and discover what life behind bars was like more than 180 years ago.

History comes to life at the Lost Villages Museum, where visitors can wander through a recreated village featuring historic buildings relocated before the flooding of the St. Lawrence Seaway. It's a wonderful place for children to explore while learning about the communities that once existed along the river.

The Glengarry Nor'Westers and Loyalist Museum is another excellent family stop, sharing the stories of the Loyalists, early settlers, and the famous Glengarry Light Infantry through engaging exhibits and artifacts that help bring local history to life.

Families visiting the new Crysler's Farm Battle Memorial Building can also make a full day of it by heading next door to Upper Canada Village. Through the Canada Strong Pass, admission is free for youth aged 17 and under, making it an incredible opportunity for families to experience one of Ontario's premier living history museums. With costumed interpreters, heritage buildings, farm animals, and hands-on demonstrations, it's a place where history truly comes alive for visitors of all ages.

All sites are free to enter; no admission fees are required. The only exception in terms of planning is the Cornwall Public Library, which asks visitors to book a tour in advance. Tours are available at 9:45 a.m. and 2:00 p.m., and reservations can be made through their website.

For someone who can visit only a handful of locations, which three sites would be at the top of your personal list, and what makes them stand out?

It’s difficult to choose just three, but my personal top picks would be the Historic SDG Jail, St. Raphael’s Ruins, and the Crysler’s Farm Battle Memorial Building.

The Historic SDG Jail offers one of the most unique visitor experiences in the region. Guests can step inside original cells, learn about the people who were once incarcerated there, and hear stories connected to more than 180 years of local history.

St. Raphael’s Ruins is another unforgettable stop. The towering stone walls of the former church create a truly striking setting, and the site offers visitors a chance to connect with the region’s deep religious, cultural, and architectural history.

The Crysler’s Farm Battle Memorial Building is also a must-see, particularly for anyone interested in Canadian military history. Its exhibits and artifacts help tell the story of the Battle of Crysler’s Farm and the important role it played during the War of 1812.

How does Doors Open help bring Cornwall and the surrounding SDG Counties communities together? What do you hope people remember after the weekend?

Doors Open is a wonderful reminder that Cornwall and SDG Counties share a rich and interconnected history. While each community has its own unique story, together they tell the larger story of how this region was shaped—through Indigenous heritage, early settlement, agriculture, industry, faith, military history, and the people who have called it home over generations.

Events like this encourage people to explore beyond their own community and discover places they may have driven past countless times without ever stepping inside. They also highlight the incredible work of the volunteers, museums, heritage organizations, and community groups that dedicate so much of their time to preserving these important landmarks and stories.

I hope both residents and visitors leave the weekend with a greater appreciation for the history that surrounds them and a renewed sense of pride in our region.

Exploring can work up an appetite! Where would you recommend stopping for coffee, a meal or something sweet during the weekend?

One of the best parts of a Doors Open adventure is discovering the fantastic local businesses along the way.

If you're looking for something sweet, Cowans Dairy (1197 Second Street West, Cornwall, ON K6J 1J2) in Cornwall is a must-stop. Their homemade ice cream and famous fudge are the perfect treat after a morning of exploring.

For the adults, Lost Villages Brewery (16133 County Road 36, Long Sault, ON K0C 1P0) in Long Sault is an excellent place to unwind with a locally crafted beer. It's a great spot to relax, reflect on the day's discoveries, and enjoy the welcoming atmosphere of one of the region's favourite breweries.

And if you're ready for a meal, I can't recommend Sol de Acapulco (15261 County Road 2, Ingleside, ON K0C 1M0) in Ingleside enough. They serve incredible authentic Mexican cuisine, and the patio overlooks the beautiful St. Lawrence River, making it the perfect place to sit back, enjoy the view, and recharge before heading to your next Doors Open site.

One of the things I love most about Doors Open is that it's more than just a heritage event—it's an opportunity to experience everything Cornwall and SDG Counties have to offer, from fascinating historic sites to exceptional local food, drink, and hospitality.

~

From stepping inside a 19th-century jail to exploring a War of 1812 battlefield or spotting wildlife along the St. Lawrence River, Doors Open Cornwall & SDG Counties offers many ways to turn a summer weekend into a memorable learning adventure. With 29 sites spanning history, architecture, arts, technology and the natural environment, families can plan an itinerary that reflects their interests while discovering places they may have passed many times without seeing inside.

Admission to every participating Doors Open site is free, making this an accessible outing for families of all ages. Remember to review individual site hours before visiting and reserve a Cornwall Public Library tour in advance if it is part of your plan. Whether you spend the day exploring Cornwall on foot or take a scenic drive through the surrounding counties, this annual event offers a meaningful opportunity to learn more about the people, places and stories that have shaped Eastern Ontario. 

Looking for more ways to turn summer travel into a learning adventure? Explore our guide to summer learning adventures across Canada for family-friendly ideas and information on Canada Strong Pass savings for VIA Rail travel, museums, national parks, historic sites and more.