Sites
Filter sites by: (add a filter)
Doors Open Ontario presenting sponsor
Doors Open Ontario presenting sponsor

Ottawa Jail Hostel Doors Open Ottawa

Ottawa Jail Hostel

The Carleton County Jail was built in 1862 and was run as a prison for 110 years, with room for approximately 150 prisoners. In 1972, the jail was shut down due to inhumane conditions. But it was repurposed and opened a year later as this hostel. After a night in a real cell block, you can visit Ottawa’s main sites.

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

Contact info

75 Nicholas Street
Ottawa, Ontario
https://saintlo.ca/en/hostels/ottawa-jail

Architecture

Year built: 1862
Building type: Commercial Courthouse
Architect: Henry Horsey

Dates/hours open

Jun 06, 10:00am - Jun 07, 04:00pm

Ottawa Little Theatre Doors Open Ottawa

Ottawa Little Theatre

The Ottawa Little Theatre, founded in 1913, is Canada’s longest continuously running community theatre. During Doors Open Ottawa, visitors will receive a guided, behind-the-scenes tour from one of the theatre’s dedicated volunteers. The tour will reflect an actor’s experience from first rehearsal to opening night and feature the talented production team who support them on that journey.

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

Contact info

400 King Edward Avenue
Ottawa, Ontario
https://www.ottawalittletheatre.com

Architecture

Year built: 1972
Building type: Theatre
Architect: W.E. Fancott

Dates/hours open

Jun 06, 10:00am - Jun 06, 04:00pm

Ottawa Main Mosque Doors Open Ottawa

Ottawa Main Mosque

The Ottawa Muslim Association and the Ottawa Mosque was incorporated in 1964 as a charitable organization, with its first phase completed in 1970. The Ottawa Mosque is the first and the oldest mosque in the city, and is one of the oldest in Canada. Its distinct architectural design includes a two-storey prayer hall, library, minaret, central dome and multi-purpose basement.

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

Contact info

251 Northwestern Avenue
Ottawa, Ontario
Email: oma@ottawamosque.ca
https://ottawamosque.ca

Architecture

Year built: 1973
Building type: Place of worship

Dates/hours open

Jun 06, 10:00am - Jun 07, 04:00pm

Ottawa Paramedic Service Headquarters Doors Open Ottawa

Ottawa Paramedic Service Headquarters

Opened in 2005, the 9,290-square-metre (100,000-square-foot) Ottawa Paramedic Service Headquarters is a state-of-the-art facility that houses all paramedic operations (except for medical dispatching), a vehicle depot and administrative area for the service. This was the first LEED-certified building in Ottawa. Each day, more than 75 emergency vehicles are deployed to serve the communities of the nation’s capital.

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

Contact info

2495 Don Reid Drive
Ottawa, Ontario
https://ottawa.ca/paramedics

Architecture

Year built: 2005
Building type: Green building Health-care facility

Dates/hours open

Jun 06, 10:00am - Jun 06, 04:00pm

Ottawa School of Art Doors Open Ottawa

Ottawa School of Art

Located in the ByWard Market, this school is in a four-storey, three-bay stone building of solid appearance with a richly decorated principal façade. During Doors Open Ottawa, visitors can join school staff and students in the lobby as they celebrate the school’s 145th anniversary, or take a guided tour. Throughout the day, art and artifacts will be on display.

  • Full wheelchair access
  • Guided tours available
  • Kid-friendly
  • Parking
  • Washrooms
  • Photography allowed

Contact info

35 George Street
Ottawa, Ontario
https://artottawa.ca

Architecture

Year built: 1917
Building type: Educational facility Gallery

Dates/hours open

Jun 06, 10:00am - Jun 06, 04:00pm

Ottawa Visitor’s Centre Doors Open Ottawa

New

Ottawa Visitor’s Centre

Located at the corner of Elgin and Queen Streets, the Ottawa Visitor Centre is the capital’s in-destination hub, welcoming visitors and inviting residents to rediscover their city. In 2026, Ottawa celebrates its 200th anniversary with festival and event programming throughout the year. Chat with tourism experts and learn more about Ottawa’s unique history and the ways to celebrate this wonderful city!

  • Full wheelchair access
  • Guided tours available
  • Kid-friendly
  • Washrooms
  • Photography allowed

Contact info

54 Elgin Strett
Ottawa, Ontario

Architecture

Year built: 1890
Building type: Government building Historical landmark Studio
Architect: Central Chambers National Historic Site of Canada

Dates/hours open

Jun 06, 10:00am - Jun 07, 04:00pm

Otter Lodge #50 Doors Open Tillsonburg

New

Otter Lodge #50

Otter Lodge #50 is a local chapter of the Independent Order of Odd Fellows. Dedicated to community service, charity and personal growth, the lodge follows the principles of friendship, love and truth. Members actively support those in need, assist the distressed, and promote educational initiatives that benefit individuals and families.

  • Kid-friendly

Architecture

Year built: Late 1880s
Building type: Commercial Historical landmark
Architect: N/A

Dates/hours open

Jun 06, 12:00pm - Jun 06, 04:00pm

Owen Sound & North Grey Union Public Library Doors Open Owen Sound

Owen Sound & North Grey Union Public Library

This library was founded in 1855 as a Mechanics’ Institute. The present neoclassical structure — completed in 1914 with a Carnegie Foundation grant — features exterior monumental brick pilasters with carved limestone trim and bases, and a barrel-vaulted ceiling with decorative plasterwork. An addition dates from 1972. The building was designated in 2009. Of architectural note is this library’s vaulted ceiling.

  • Full wheelchair access
  • Kid-friendly
  • Parking
  • Self-guided tours available
  • Site is protected by the Ontario Heritage Trust
  • Washrooms
  • Photography allowed
  • Rental opportunities

Contact info

824 1st Avenue West
Owen Sound, Ontario
https://osngupl.ca

Architecture

Year built: 1914
Building type: Attraction Historical landmark Library
Architect: Forster & Clark

Dates/hours open

Jul 18, 10:00am - Jul 18, 04:00pm

Owen Sound Artists' Co-op Doors Open Owen Sound

Owen Sound Artists' Co-op

Constructed in 1905 as a retail store, this building was purchased in 1924 by a rival retailer who operated it as a dry goods store until 1989. Designated under the Ontario Heritage Act in 1990, it is now home to the Owen Sound Artists' Co-op — a gallery/retail space for area artists to showcase and sell their work.

  • Adaptive reuse
  • Full wheelchair access
  • Guided tours available
  • Parking
  • Washrooms
  • Photography allowed

Contact info

942 2nd Avenue East
Owen Sound, Ontario
Email: info@artistscoop.ca
https://artistscoop.ca

Architecture

Year built: 1905
Building type: Commercial Historical landmark Gallery
Architect: Forster and Clark

Dates/hours open

Jul 18, 10:00am - Jul 18, 04:00pm

Palomino Home Studio (Victor Molev) Doors Open Richmond Hill

Palomino Home Studio (Victor Molev)

This home studio showcases the works of Victor Molev, a contemporary painter working primarily in oil on canvas, known for his distinctive blend of surrealism and symbolic realism. His work draws on classical painting traditions while exploring dreamlike, psychological, and allegorical themes. Through carefully constructed compositions, muted palettes, and refined textures, Molev creates timeless images that evoke mystery and introspection.

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

Contact info

10 Palomino Drive
Richmond Hill, Ontario
Email: culture@richmondhill.ca

Architecture

Building type: Private residence Studio

Dates/hours open

May 09, 10:00am - May 09, 04:00pm

Parkdale Arts and Culture Centre Doors Open Toronto

Parkdale Arts and Culture Centre

The Parkdale Arts and Cultural Centre was the City's Police Station — 6 Division from 1931-63. The building now has nine active work studios for artists, as well as community offices and an art gallery, Gallery 1313 (once the site of 12 holding cells for prisoners). The art deco clock above the main entrance was repaired but is not currently functioning.

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

Contact info

1313 Queen Street West
Toronto, Ontario
https://gallery1313.org

Architecture

Year built: 1931
Building type: Gallery
Architect: J.J. Woolnough

Dates/hours open

May 23, 10:00am - May 24, 05:00pm

Parks Horticulture Greenhouse Doors Open Oshawa

Parks Horticulture Greenhouse

Explore the City’s greenhouse, one of the few remaining city-run glass greenhouses in Ontario. It is dedicated to housing tropical collections and producing annual bedding plants for city parks, gardens, City Hall, the Oshawa Valley Botanical Garden, and downtown planters/hanging baskets. After sowing over 5,000 seeds and planted 2,000 cuttings, they have 60,000 plants ready for planting by May.

  • Food vendors
  • Full wheelchair access
  • Kid-friendly
  • Parking
  • Self-guided tours available
  • Washrooms
  • Photography allowed

Contact info

919 Farewell Street
Oshawa, Ontario
Email: specialevents@oshawa.ca
https://www.oshawa.ca/

Architecture

Year built: 1964

Dates/hours open

May 02, 10:00am - May 02, 04:00pm

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

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 15, 10:00am - Aug 16, 04:00pm

Parrott Riverfront Trail Doors Open Belleville

Parrott Riverfront Trail

This paved and lit trail is 1.6 kilometres long (1 mile), travelling along the Moira River behind the historical downtown. Along this trail is a footbridge, opened in October 2022 to replace the early 1800s original. To the north, it connects to the Riverside Trail. To the south, it connects to the Zwicks Trail and the Kiwanis Bayshore Trail.

  • Full wheelchair access
  • Parking
  • Self-guided tours available
  • Photography allowed

Architecture

Building type: Attraction

Dates/hours open

Sep 12, 10:00am - Sep 12, 04:00pm

Peel St. Beverage Company Doors Open Waterloo Region

New

Peel St. Beverage Company

Named for the street that connected the 1832 settlement that become New Hamburg, and located in an area of rich historical relevance, this taproom and craft beverage producer blends heritage character with a contemporary social experience. Explore the nano-brewery and revel in the architecture and stories deeply connected to the early industrial and residential growth of downtown New Hamburg.

  • Adaptive reuse
  • Parking
  • Self-guided tours available
  • Washrooms

Contact info

68 Huron Street
New Hamburg, Ontario
Email: info@peelstbevco.com
https://peelstbeveragecompany.ca

Architecture

Year built: 1872
Building type: Commercial Food and drink Historical house Private residence

Dates/hours open

Sep 19, 10:00am - Sep 19, 04:00pm

Penetanguishene Centennial Museum & Archives Doors Open Simcoe County

Penetanguishene Centennial Museum & Archives

Step back in time at the Penetanguishene Centennial Museum & Archives, featuring an original 1875 general store. Discover the logging industry's role in the town's early days and explore Penetanguishene's cultural history. Enjoy a fun kids scavenger hunt then join a guided walking tour visiting landmarks connected to lumber baron Charles Beck. 

  • Adaptive reuse
  • Kid-friendly
  • Parking
  • Partial wheelchair access
  • Self-guided tours available
  • Site has blue and gold provincial plaque
  • Washrooms
  • Photography allowed
  • Rental opportunities

Contact info

13 Burke Street
Penetanguishene, Ontario
Email: museum@penetanguishene.ca
https://www.penetanguishene.ca/museum

Architecture

Year built: 1875
Building type: Commercial Museum

Dates/hours open

Sep 19, 09:00am - Sep 19, 04:30pm

Penetanguishene Historical Walking Tour Doors Open Simcoe County

Penetanguishene Historical Walking Tour

Explore Penetanguishene’s rich heritage and discover the legacy of lumber baron Charles Beck, one of the town’s most influential industrialists. Start at the Penetanguishene Centennial Museum & Archives, then stroll down Beck Boulevard to trace the locations of Beck’s mills. Then it’s Beck’s family home on Fox Street before ending at Burkevale, Ontario’s last remaining Protestant separate school.

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

Contact info

Start at 13 Burke Street (Penetanguishene Centennial Museum & Archives)
Penetanguishene, Ontario
Email: museum@penetanguishene.ca
https://www.penetanguishene.ca

Architecture

Year built: Various

Architect: Various

Dates/hours open

Sep 19, 10:00am - Sep 19, 03:00pm

Pentland Cemetery Doors Open Loyalist Township

Pentland Cemetery

The Pentland Cemetery — Amherst Island’s first non-denominational cemetery — was in service from 1831-2001. It runs between Front Road and Lake Ontario. The headstones record the predominantly Irish pioneer families that had settled on the Island. The first person buried in the cemetery was in 1831. Find more information at the Neilson Store Museum and Cultural Centre.

  • Self-guided tours available

Contact info

1652 Front Road
Stella, Amherst Island, Ontario

Architecture

Year built: 1831
Building type: Cemetery

Dates/hours open

Jun 20, 10:00am - Jun 20, 04:00pm

Perimeter Institute for Theoretical Physics Doors Open Waterloo Region

Perimeter Institute for Theoretical Physics

Explore the world’s largest independent research institute devoted to theoretical physics, a place where scientists investigate the fundamental workings of the universe, from the smallest particles to the entire cosmos. During your visit, you can explore the Institute’s award-winning design and get behind-the-scenes access through an informative building tour. Free tickets are required for entry.

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

Contact info

31 Caroline Street North
Waterloo, Ontario
Email: contact@perimeterinstitute.ca
https://perimeterinstitute.ca

Architecture

Year built: 2004 (Perimeter Institute), 2011 (Stephen Hawking Centre expansion)
Building type: Educational facility
Architect: Saucier + Perrotte, Montreal (Perimeter Institute, 2004) Teeple Architects, Toronto (Stephen Hawking Centre expansion, 2011)

Dates/hours open

Sep 19, 10:00am - Sep 19, 04:00pm

Perth County Courthouse Doors Open Stratford

Perth County Courthouse

Designed by prominent architect George F. Durand, this is one of the most magnificent courthouses in Ontario with many of its original features intact. This excellent example of High Victorian architecture combines bichromal masonry with a variety of other building materials, not to mention architectural styles. Check out the spectacular stained-glass windows, intricate woodwork, decorative tile floors and grand staircases.

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

Contact info

1 Huron Street
Stratford, Ontario
Email: info@perthcounty.ca
https://www.perthcounty.ca

Architecture

Year built: 1887
Building type: Courthouse Government building
Architect: George F. Durand

Dates/hours open

Apr 18, 10:00am - Apr 18, 04:00pm

Peterborough & County Military Museum Doors Open Peterborough

Peterborough & County Military Museum

Opened in 2022, the Peterborough & County Military Museum invites visitors to discover the region’s remarkable military heritage. Located on the ground floor of the historic Peterborough Armoury and operated by knowledgeable volunteers, the museum features artifacts and stories spanning the War of 1812, the 1837 Rebellion, Fenian Raids, both World Wars, the Korean War and today’s peacekeeping missions.

  • Adaptive reuse
  • Full wheelchair access
  • Guided tours available
  • Kid-friendly
  • National Historic Site (Canada)
  • Parking
  • Washrooms
  • Photography allowed
  • Veterans/Military heritage

Contact info

220 Murray Street
Peterborough, Ontario
http://www.thepeterboroughandcountymilitarymuseum.ca

Architecture

Year built: 1907-09
Building type: Military Museum
Architect: Thomas Fuller

Dates/hours open

Sep 12, 10:00am - Sep 12, 04:00pm

Pickering College Blue & Silver Farm Doors Open Whitchurch-Stouffville

Pickering College Blue & Silver Farm

Built in 1860, this farm — with over 30 hectares (78 acres) — was donated in 2021 to Pickering College by Charles Boyd, who left behind a legacy as an educator. Come and experience the many learning opportunities at the farm, including a self-guided tour of the gardens, greenhouses, forests and the outdoor kitchens.

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

Contact info

17019 Woodbine Avenue
Stouffville, Ontario
https://www.pickeringcollege.on.ca/about/blue-silver-farm

Architecture

Year built: 1860 (farmhouse); 1905 (barn)
Building type: Educational facility Historical house Farm

Dates/hours open

Jun 06, 10:00am - Jun 06, 04:00pm

Pinnacle Playhouse Doors Open Belleville

New

Pinnacle Playhouse

The Pinnacle Playhouse, originally named the D.L. Storey Building, was built circa 1939 as a Salvation Army barracks. In 1969, the expanding Salvation Army sold their barracks to the City of Belleville, and since then, it has been home to the Belleville Theatre Guild. The Belleville Theatre Guild is now celebrating 75 years of live community theatre in Belleville! Guided tours only.

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

Contact info

256 Pinnacle Street
Belleville, Ontario
Email: accounting@bellevilletheatreguild.ca
https://bellevilletheatreguild.ca/

Architecture

Year built: 1939
Building type: Attraction Theatre
Architect: Thomas Adams

Dates/hours open

Sep 12, 10:00am - Sep 12, 12:00pm

Players' Guild of Hamilton, The Doors Open Hamilton

Players' Guild of Hamilton, The

An 1876 murder ... the killer hanged ... rumours of a ghost. Historical facts or backdrop for great theatre? The Players’ Guild of Hamilton has been a leader in the local community theatre scene since 1875, making it North America’s oldest community theatre group. Enjoy guided tours and a cash bar (alcoholic and non-alcoholic beverages). Open rehearsals may also occur.

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

Contact info

80 Queen Street South
Hamilton, Ontario
Email: admin@playersguild.org
https://playersguild.org

Architecture

Year built: 1878
Building type: Theatre
Architect: Valancey Fuller

Dates/hours open

May 02, 10:00am - May 03, 04:00pm