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Doors Open Ontario:

763 In-person Doors Open sites

Christ Church Seaway Doors Open Cornwall and SDG Counties

  • In-person Doors Open Ontario

Christ Church Seaway

This church was built in 1959 after the St. Lawrence Seaway Project was completed. The project displaced the residents of what are now known as the Lost Villages, a group of communities along the St. Lawrence. In the process, 17 churches were moved or destroyed. Christ Church was built in the new town of Long Sault to accommodate other congregations.

  • Full wheelchair access
  • Guided tours available
  • Parking
  • Washrooms
  • Photography allowed
  • Rental opportunities

Contact info

2 Bethune Avenue
Long Sault, Ontario
Email: NHALLBERG7258@gmail.com
https://www.saintlawrenceparish.org/christchurch

Architecture

Year built: 1959
Building type: Place of worship

Dates/hours open

Aug 16, 10:00am - Aug 16, 04:00pm

DEV Hotel & Conference Centre Doors Open Cornwall and SDG Counties

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  • In-person Doors Open Ontario

DEV Hotel & Conference Centre

Set along the St. Lawrence River, the DEV Hotel & Conference Centre offers ideal spaces for conferences, events and team training. With 6,500 square metres (70,000 square feet) of meeting space, an onsite restaurant and a fitness centre, it combines convenience with comfort. Enjoy scenic views, modern rooms with workspaces, and relaxing amenities — all to ensure an unforgettable stay.

  • Full wheelchair access
  • Kid-friendly
  • Parking
  • Self-guided tours available
  • Washrooms
  • Photography allowed
  • Rental opportunities

Contact info

1950 Montreal Road
Cornwall, Ontario
Email: info@devcentre.ca
https://www.devhotelandconferencecentre.com

Architecture

Building type: Commercial Food and drink

Dates/hours open

Aug 16, 10:00am - Aug 17, 04:00pm

Emmanuel Heritage Centre Doors Open Rideau Lakes

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Emmanuel Heritage Centre

Overlooking the village of Portland and Big Rideau Lake is the Emmanuel Heritage Centre (1861), a former Anglican church. Its beauty lies in its simplicity — constructed in the Gothic revival style with sandstone quarried onsite, featuring unusual stone buttresses. Owned by the Portland on the Rideau Historical Society, the impressive interior hosts Portland historical memorabilia, musical events and seasonal markets.

  • Digital Doors Open
  • Adaptive reuse
  • Guided tours available
  • Parking
  • Partial wheelchair access
  • Self-guided tours available
  • Photography allowed
  • Activities and games

Contact info

2767 Highway 15
Portland, Ontario

Architecture

Year built: 1861
Building type: Historical landmark Place of worship

Foley Mountain Conservation Area Doors Open Rideau Lakes

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  • In-person Doors Open Ontario

Foley Mountain Conservation Area

Overlooking the Upper Rideau Lake, the Foley Mountain Conservation Area is an exciting natural space — home to the famous Spy Rock Lookout and 10 km (6 miles) of trails through rugged wilderness, mixed forest, ponds and fields. The site, operated by the Rideau Valley Conservation Authority, provides something for the whole family — including swimming, educational facilities and picnic spots.

  • Kid-friendly
  • Parking
  • Partial wheelchair access
  • Self-guided tours available
  • Washrooms
  • Photography allowed
  • Rental opportunities

Contact info

105 Foley Mountain Road
Rideau Lakes, Ontario
Email: doorsopen@rideaulakes.ca
https://www.rvca.ca/conservation-areas/foley-mountain

Architecture

Year built: Opened in 1973

Dates/hours open

Aug 16, 10:00am - Aug 16, 04:00pm

Glengarry Nor'Westers and Loyalist Museum Doors Open Cornwall and SDG Counties

  • In-person Doors Open Ontario

Glengarry Nor'Westers and Loyalist Museum

This Georgian-style building dates back to 1862. In 1967, it became a museum dedicated to depicting the story of Sir John Johnson and other Loyalists who settled in the area during the American Revolution. Special exhibits celebrate the bicentennial of the Williamstown Fair (the oldest agrarian fair in Canada) and the War of 1812.

  • French services available
  • Guided tours available
  • Kid-friendly
  • Parking
  • Partial wheelchair access
  • Self-guided tours available
  • Site has blue and gold provincial plaque
  • Washrooms
  • Photography allowed

Contact info

19651 County Road 17
Williamstown, Ontario
Email: gnlmuseum@gmail.com
https://www.glengarrynorwestersandloyalistmuseum.ca

Architecture

Year built: 1862
Building type: Museum

Dates/hours open

Aug 16, 10:00am - Aug 17, 04:00pm

Glengarry Pioneer Museum Doors Open Cornwall and SDG Counties

  • In-person Doors Open Ontario

Glengarry Pioneer Museum

Opened in 1962, the Glengarry Pioneer Museum has grown to include eight heritage buildings, including the Star Inn, a stagecoach stop in the 1860s. Its barroom is thought to be one of the oldest in Eastern Ontario. Other pioneer buildings on this site are the blacksmith shop, town hall, Orange Lodge, log barns, drive shed and cheese factory.

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

Contact info

1645 County Road 30
Dunvegan, Ontario
Email: info@glengarrypioneermuseum.ca
https://glengarrypioneermuseum.ca

Architecture

Year built: 1800-1910
Building type: Museum

Dates/hours open

Aug 16, 10:00am - Aug 17, 04:00pm

Glengarry Sports Hall of Fame Doors Open Cornwall and SDG Counties

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  • In-person Doors Open Ontario

Glengarry Sports Hall of Fame

The Glengarry Sports Hall of Fame commemorates and celebrates the achievements of Glengarry County's residents, honouring individuals and teams across various sports — including soccer, hockey, curling and more. During Doors Open, tour the facility and explore the exhibits that feature portraits and memorabilia of its inductees — some of whom have played professional sport or became Olympic athletes.

  • Guided tours available
  • Kid-friendly
  • Parking
  • Partial wheelchair access
  • Self-guided tours available
  • Washrooms
  • Photography allowed

Contact info

35 Fair Street
Maxville, Ontario
Email: Glenhalloffame@bellnet.ca
https://www.glengarrysports.ca

Architecture

Year built: Founded in 1978
Building type: Museum

Dates/hours open

Aug 16, 10:00am - Aug 17, 04:00pm

Heritage Centre, The Doors Open Cornwall and SDG Counties

  • In-person Doors Open Ontario

Heritage Centre, The

The Heritage Centre, originally the Winchester Township Town Hall, served as a courthouse, drill hall, movie theatre, firehall and many other things. The Chesterville and District Historical Society took over the building in 1984 and has been collecting artifacts and researching local history since. The building is now maintained by the Township of North Dundas.

  • Adaptive reuse
  • Kid-friendly
  • Parking
  • Partial wheelchair access
  • Self-guided tours available
  • Washrooms
  • Photography allowed

Contact info

14 Victoria Street
Chesterville, Ontario
Email: chestervillehistoricalsociety@gmail.com
https://chestervilleanddistricths.weebly.com

Architecture

Building type: Courthouse Military Museum Theatre Fire station

Dates/hours open

Aug 16, 10:00am - Aug 16, 04:00pm

Historic SDG Jail Doors Open Cornwall and SDG Counties

  • In-person Doors Open Ontario

Historic SDG Jail

This jail has a rich history. It served as a maximum-security facility for nearly a century, housing some infamous criminals. It was notorious for its harsh conditions and alleged human rights violations. Today, the jail stands as a museum and popular tourist attraction, offering visitors a glimpse into the prison's past and the harsh realities of life behind bars.

  • Guided tours available
  • Kid-friendly
  • Parking
  • Self-guided tours available
  • Washrooms
  • Photography allowed
  • Rental opportunities

Contact info

11 Water Street West
Cornwall, Ontario
Email: tourism@sdgcounties.ca
https://www.historicsdgjail.com

Architecture

Year built: 1833
Building type: Attraction Historical landmark

Dates/hours open

Aug 16, 10:00am - Aug 17, 04:00pm

Lockmaster's House Museum Doors Open Rideau Lakes

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  • In-person Doors Open Ontario

Lockmaster's House Museum

Constructed along the historical Rideau Canal, this house was originally a one-storey limestone building. Renovations in 1894 included a second storey and kitchen. The house was occupied by the lockmasters’ families continuously until 1967. It was always bustling with the only local telephone and post office. The museum opened in 1982 after community organizations rallied together to save the house.

  • Adaptive reuse
  • Guided tours available
  • Kid-friendly
  • Parking
  • Self-guided tours available
  • Washrooms
  • Photography allowed

Contact info

1724 Chaffey's Lock Road
Chaffey's Lock, Ontario
Email: doorsopen@rideaulakes.ca
http://www.chaffeyslock.ca/lockmasters-house-museum.html

Architecture

Year built: 1844
Building type: Historical landmark Historical house Military Museum

Dates/hours open

Aug 16, 10:00am - Aug 17, 04:00pm

Lost Villages Museum Doors Open Cornwall and SDG Counties

  • In-person Doors Open Ontario

Lost Villages Museum

This site comprises 10 heritage buildings that were moved here by members of The Lost Villages Historical Society when the St. Lawrence Seaway was developed in 1958. Casualties of progress, the villages and hamlets disappeared under water but are remembered by former residents. The interiors and exteriors have been restored, and the buildings have been assembled in a village-like setting.

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

Contact info

16361 Fran Laflamme Drive (Ault Park)
Long Sault, Ontario
Email: jim.k.brownell@gmail.com
https://lostvillages.ca

Architecture

Year built: Various
Building type: Museum
Architect: Various

Dates/hours open

Aug 16, 10:00am - Aug 17, 05:00pm

Maison Shalom House Doors Open Cornwall and SDG Counties

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  • In-person Doors Open Ontario

Maison Shalom House

Shalom House is a bilingual archdiocesan retreat and welcome centre that offers opportunities for prayer and reflection, meetings and retreats. Located today in beautiful Alexandria in the heart of North Glengarry (they moved here in 2008), Shalom House has been active for nearly 50 years. Although the mission has expanded, they continue to offer a beautiful and tranquil setting.

  • Guided tours available
  • Parking
  • Partial wheelchair access
  • Washrooms
  • Photography allowed

Contact info

170 McCormick Road
Alexandria, Ontario
Email: director@stfinnan.ca
https://www.maisonshalomhouse.com

Architecture


Dates/hours open

Aug 16, 10:00am - Aug 16, 04:00pm

Martintown Grist Mill Doors Open Cornwall and SDG Counties

  • In-person Doors Open Ontario

Martintown Grist Mill

The Martintown Mill, built in 1846 by Alexander McMartin, is located in the centre of the village of Martintown in a picturesque setting on the Raisin River. Built with local fieldstone, it served the region as a flour milling operation. Commercial use of the mill ended in 1947. It is now a popular museum and tourist destination.

  • Adaptive reuse
  • Guided tours available
  • Kid-friendly
  • Parking
  • Partial wheelchair access
  • Self-guided tours available
  • Site has blue and gold provincial plaque
  • Site is protected by the Ontario Heritage Trust
  • Washrooms
  • Photography allowed

Contact info

18544 County Road 18
Martintown, Ontario
Email: martintownmill@gmail.com
https://www.facebook.com/MartintownMill

Architecture

Year built: 1846
Building type: Commercial Museum
Architect: Alexander McMartin

Dates/hours open

Aug 16, 10:00am - Aug 17, 04:00pm

McKinney House Doors Open Rideau Lakes

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  • In-person Doors Open Ontario

McKinney House

William McKinney, a prosperous local farmer and blacksmith, purchased this land (originally granted to American General Benedict Arnold) and built this elegant home in 1856. Once a stagecoach stop, the home and gardens are now undergoing careful restoration guided by heritage conservation principles. Enjoy this rare chance to see a historical home mid-rehabilitation and learn about the process. Exterior only!

  • Guided tours available
  • Parking
  • Self-guided tours available
  • Photography allowed

Contact info

798 Highway 15
Lombardy, Ontario
Email: doorsopen@rideaulakes.ca

Architecture

Year built: 1856
Building type: Historical house Private residence
Architect: Stone mason William Tweedy was paid $1 a day to build this house

Dates/hours open

Aug 16, 10:00am - Aug 17, 04:00pm

Morton Community Hall Doors Open Rideau Lakes

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  • In-person Doors Open Ontario

Morton Community Hall

This community hall, constructed in 1929, was funded by the Morton Women's Institute. It retains many original interior details, including its heritage hardwood floors, the ceiling and the original stage. This once-popular dance location throughout the mid-1900s continues to be active today with coffee hours, fitness and dancing. Come and see why this site remains popular with the community.

  • Full wheelchair access
  • Guided tours available
  • Parking
  • Self-guided tours available
  • Washrooms
  • Photography allowed
  • Rental opportunities

Contact info

13 Judd Street
Morton, Ontario
Email: doorsopen@rideaulakes.ca
https://www.facebook.com/MortonCommunityHall

Architecture

Year built: 1929
Building type: Food and drink Historical landmark

Dates/hours open

Aug 16, 10:00am - Aug 17, 04:00pm

Newboro Blockhouse Doors Open Rideau Lakes

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  • In-person Doors Open Ontario
  • Digital Doors Open Icon Ontario

Newboro Blockhouse

Discover one of only four blockhouses built on the Rideau Canal. This building features thick walls designed to withstand small cannon fire and a tin sheathed roof to defy torching. Situated on a knoll to observe the lock and channel, the blockhouse can hold a 20-man garrison and house the lockmaster. Come and enjoy this rare opportunity to peek inside! (Photo: Rosanne Lake)

  • Digital Doors Open
  • Adaptive reuse
  • Guided tours available
  • National Historic Site (Canada)
  • Self-guided tours available
  • Photography allowed
  • Videos

Contact info

10 Blockhouse Lane
Newboro, Ontario
Email: doorsopen@rideaulakes.ca
https://rideau-info.com/canal/locks/36-newboro.html

Architecture

Year built: c. 1832
Building type: Government building Historical landmark Military
Architect: Colonel John By

Newboro Branch, Rideau Lakes Public Library Doors Open Rideau Lakes

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Newboro Branch, Rideau Lakes Public Library

This heritage stone library branch, located in the former courthouse, is in one of the oldest buildings in Rideau Lakes. Dating back to before 1850, it has a storied history — having served as a school, a jail, municipal building and community hall. See the original wooden jail door inside and take a heritage picture with the library’s green screen.

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

Contact info

10 Brock Street
Newboro, Ontario
https://rlpl.ca

Architecture

Year built: Late 1840s
Building type: Courthouse Historical landmark Library Schoolhouse

Dates/hours open

Aug 16, 10:00am - Aug 17, 04:00pm

Newboro Manor Doors Open Rideau Lakes

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  • In-person Doors Open Ontario

Newboro Manor

Step inside Newboro Manor, a one-of-a-kind 1860s Italianate stone mansion rich in history and charm. Original features include a grand staircase, plasterwork, flooring, windows and exposed stonework. Glittering chandeliers illuminate inspiring artwork and furnishings, both antique and contemporary. Visit the summer kitchen and unwind in the stunning conservatory before heading to Stone Manor Studios in the renovated stone carriage house.

  • Guided tours available
  • Self-guided tours available
  • Washrooms
  • Photography allowed

Contact info

11 New Street
Newboro, Ontario

Architecture

Year built: c. 1860
Building type: Historical house Private residence Studio
Architect: John Draffin

Dates/hours open

Aug 16, 10:00am - Aug 17, 04:00pm

Old Stone Mill Doors Open Rideau Lakes

  • In-person Doors Open Ontario
  • Digital Doors Open Icon Ontario

Old Stone Mill

The Old Stone Mill is Ontario’s only surviving pre-1812, fully automated stone gristmill. Built of local stone and timber after inventor OIiver Evans’ design, it has been revitalized by the Delta Mill Society with authentic equipment and enhanced interpretation. Watch the 200-year-old millstones in action. During Doors Open, there will be blacksmithing demonstrations on Saturday and a special quilt display.

  • Digital Doors Open
  • Guided tours available
  • Kid-friendly
  • National Historic Site (Canada)
  • Partial wheelchair access
  • Self-guided tours available
  • Photography allowed

Contact info

44 King Street
Delta, Ontario
https://deltamill.org

Architecture

Year built: 1810
Building type: Historical landmark Museum

Old Town Hall Doors Open Rideau Lakes

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  • In-person Doors Open Ontario

Old Town Hall

Delta’s Old Town Hall has served the community since 1880 as a courthouse, Masonic lodge, theatre, municipal office, museum and even a jail. The bricks used for construction came from a brickyard in the village. The wooden floors, stage, tin ceiling, mid-room columns and fascinating architecture of this building have witnessed gatherings here for almost 150 years.

  • Adaptive reuse
  • Full wheelchair access
  • Parking
  • Self-guided tours available
  • Washrooms
  • Photography allowed
  • Rental opportunities

Contact info

8 Lower Beverley Lake Park Road
Delta, Ontario
https://deltamill.org/hall-rental.html

Architecture

Year built: 1880
Building type: Concert hall Courthouse Government building Historical landmark Masonic lodge

Dates/hours open

Aug 16, 10:00am - Aug 17, 04:00pm

Paroisse de la Nativité-de-la-Bienheureuse-Vierge-Marie Doors Open Cornwall and SDG Counties

  • In-person Doors Open Ontario

Paroisse de la Nativité-de-la-Bienheureuse-Vierge-Marie

The Paroisse de la Nativité-de-la-Bienheureuse-Vierge-Marie was the early nucleus of Cornwall's Francophone community and has been a dominant feature of Cornwall's skyline for over a century. The beautiful structure was designed and supervised by the second pastor of the parish, Father Paul-Antoine de Saunhac, a native of Toulouse, France. The first mass was celebrated here on Christmas Day 1891.

  • French services available
  • Kid-friendly
  • Parking
  • Partial wheelchair access
  • Self-guided tours available
  • Washrooms
  • Photography allowed
  • Rental opportunities

Contact info

300 Montreal Road
Cornwall, Ontario
Email: paroissenativite@gmail.com

Architecture

Year built: 1887
Building type: Place of worship
Architect: Father Paul-Antoine de Saunhac

Dates/hours open

Aug 16, 10:00am - Aug 17, 04:00pm

Philipsville Baptist Church Doors Open Rideau Lakes

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  • In-person Doors Open Ontario

Philipsville Baptist Church

One of the area’s oldest surviving church buildings, this 1865 stone church is now a private residence that has been beautifully restored. Don’t miss the beautiful Gothic windows, the wooden front doors with a pointed transom above, the original full-body baptismal font, decorative keystone voussoirs atop the windows, and the incredible interior woodwork. Enjoy this rare chance to step inside!

  • Adaptive reuse
  • Guided tours available
  • Parking
  • Self-guided tours available
  • Photography allowed

Contact info

1407 County Road 8
Philipsville, Ontario
Email: doorsopen@rideaulakes.ca

Architecture

Year built: 1865
Building type: Place of worship Private residence
Architect: Elder Abel Stevens

Dates/hours open

Aug 16, 10:00am - Aug 17, 04:00pm

Priest's Mill Arts Centre Doors Open Cornwall and SDG Counties

  • In-person Doors Open Ontario

Priest's Mill Arts Centre

The Priest's Mill Arts Centre is located on the ground floor of the stone-and-mortar grist mill that was constructed in 1819. Razed by fire and rebuilt several times, the present building dates to 1884. The ground floor of the centre block — rebuilt in 1902 — has recently been lovingly refurbished as an art gallery and studio.

  • Parking
  • Self-guided tours available
  • Washrooms
  • Photography allowed

Contact info

16 Mill Square
Alexandria, Ontario
Email: Lourens@priestsmill.ca
https://pmac.art

Architecture

Year built: 1902-18 (current building)
Building type: Attraction Gallery
Architect: Father Alexander MacDonell

Dates/hours open

Aug 16, 10:00am - Aug 17, 04:00pm

Queen's University Biological Station Doors Open Rideau Lakes

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  • In-person Doors Open Ontario

Queen's University Biological Station

The Queen’s University Biological Station is celebrating 80 years! Established in 1945, it is now among the top scientific field stations in Canada. They encompass 3,240 hectares (8,000 acres) of flora, fauna and habitat for leading-edge research and field courses. For Doors Open, take a special field walk from 10 a.m. to noon on August 16 only. Pre-registration required. (Photo: Allen Tian)

  • Guided tours available
  • Parking
  • Washrooms
  • Photography allowed

Contact info

280 Queen's University Road
Elgin, Ontario
https://qubs.ca

Architecture

Year built: 1945
Building type: Educational facility

Dates/hours open

Aug 16, 10:00am - Aug 16, 12:00pm