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Doors Open Ontario presenting sponsor

Hamilton Military Museum Doors Open Hamilton

Hamilton Military Museum

Battery Lodge, now home to the Hamilton Military Museum, began as a guardhouse during the 1837 Rebellion. Today it showcases military history through exhibits including Lawyers and Land Pirates and Blood Ties to a Gentle Landscape. Explore the Discovery Gallery, experience life as a soldier and try the accordions or drums celebrating Hamilton: city of music!

  • Kid-friendly
  • National Historic Site (Canada)
  • Parking
  • Partial wheelchair access
  • Self-guided tours available
  • Washrooms
  • Photography allowed
  • Veterans/Military heritage

Contact info

610 York Blvd. (at Dundurn National Historic Site)
Hamilton, Ontario
Email: museums@hamilton.ca
https://hamiltoncivicmuseums.ca/the-hamilton-military-museum/

Architecture

Year built: 1835-38
Building type: Attraction Historical landmark Military Museum
Architect: Robert Wetherall

Dates/hours open

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

Hamilton Museum of Steam & Technology National Historic Site Doors Open Hamilton

Hamilton Museum of Steam & Technology National Historic Site

Located on the site of the Hamilton Waterworks complex, this museum features two 13.7-metre (45-foot) steam engines which pumped clean drinking water from 1859 to 1910. Built in Dundas, these steam engines are the oldest of this type still standing in North America. Join us for self-guided tour of the Boilerhouse, Pumphouse and Woodshed.

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

Architecture

Year built: 1859
Building type: Historical landmark Museum
Architect: Thomas Coltrin Keefer

Dates/hours open

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

Hamilton Police Museum (Tisdale House) Doors Open Hamilton

Hamilton Police Museum (Tisdale House)

Hamilton Police Museum (Tisdale House)

Tisdale House is the oldest home in Ancaster. In the 1820s, the building was occupied by "Charcoal Burner" John O’Neil and housed two charcoal kilns. Later, the house became an undertaker’s parlour run by George Moore. The house has been fully retrofitted and is now home to the Ancaster Community Policing Centre and the Hamilton Police Museum.

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

Contact info

314 Wilson Street East
Ancaster, Ontario

Architecture

Year built: 1806
Building type: Attraction Historical landmark Museum

Dates/hours open

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

Hammond Museum of Radio Doors Open Guelph

Hammond Museum of Radio

Established in 1982 by Fred Hammond, one of the founding members of Guelph’s Hammond Manufacturing, this museum houses an extensive collection of rare and historically significant pieces. The 2,000-plus items exhibited here illustrate the development of radio throughout the past 100 years. Included are crystal radios, early tabletop and broadcast pieces, early wireless sets, military and amateur radio equipment.

  • Full wheelchair access
  • Parking

Contact info

595 Southgate Drive
Guelph, Ontario
http://www.hammondmuseumofradio.org/

Architecture

Year built: 1982
Building type: Museum
Architect: Hammond Power

Dates/hours open

Apr 25, 10:00am - Apr 25, 04:00pm

Harmony Centre Doors Open Owen Sound

Harmony Centre

Originally a church, this dynamic cultural institution is dedicated to providing the community with accessible and affordable spaces to share, create, educate and perform. With a 700-seat auditorium, a commons area, kitchen/banquet facilities, and numerous smaller lofts and studios, the Harmony Centre is an example of the value of retrofitting an existing community asset to respond to changing times.

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

Contact info

890 4th Avenue East
Owen Sound, Ontario
Email: info@hamonycentre.ca
https://harmonycentre.ca

Architecture

Year built: 1873; enlarged in 1886; new addition in 1908
Building type: Place of worship

Dates/hours open

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

Harmony Hall Doors Open Whitchurch-Stouffville

New

Harmony Hall

Opened in 2024, Harmony Hall is located within the former Vandorf Community Hall constructed in 1921 and is now a modern live-music and cultural venue. View historic photographs and displays, enjoy live acoustic performances by local musicians and perform your own song while enjoying light refreshments.

  • Adaptive reuse
  • Food vendors
  • Guided tours available
  • Parking
  • Self-guided tours available
  • Washrooms
  • Photography allowed
  • Rental opportunities

Contact info

14663 Woodbine Avenue
Stouffville, Ontario
Email: info@harmonymusichall.ca
https://harmonymusichall.ca/

Architecture

Year built: c. 1921
Building type: Concert hall Historical landmark

Dates/hours open

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

Hastings and Prince Edward Regiment Museum Doors Open Belleville

Hastings and Prince Edward Regiment Museum

The Hastings and Prince Edward Regiment Museum is located on the main floor of the Belleville Armoury. The museum preserves the history of the militia, specifically the Hastings and Prince Edward Regiment, through the collection and preservation of military artifacts and documents of historical significance to the Regiment and its antecedent units.

  • Full wheelchair access
  • Guided tours available
  • Parking
  • Self-guided tours available
  • Washrooms
  • Photography allowed
  • Veterans/Military heritage

Contact info

189 Pinnacle Street
Belleville, Ontario
Email: HastingsprinceedwardRegt.museum@gmail.com

Architecture

Year built: 1908
Building type: Military Museum

Dates/hours open

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

HDR Architecture Associates Inc. Doors Open London

HDR Architecture Associates Inc.

Come visit HDR London's architectural design studio to tour an architectural practice and talk to team members about architecture and design. Take a virtual tour of completed and in-progress projects. Learn about the design process for commercial and institutional projects and join conversations on how architectural design impacts their lives. Visiting children can participate in a design competition.

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

Contact info

252 Pall Mall Street, Suite 300
London, Ontario
Email: jeffrey.salmon@hdrinc.com
https://www.hdrinc.com/services/architecture

Architecture

Year built: 1989
Building type: Commercial

Dates/hours open

Sep 19, 10:00am - Sep 20, 02:00pm

Heintzman House Doors Open Markham

Heintzman House

One of the area’s oldest buildings, Heintzman House began as an adobe brick cottage in the early 19th century. It was expanded in 1817 by Colonel George Crookshank and later transformed in the 1930s into its present elegant form by the grandson of the founder of the Heintzman Piano Company. Visitors can enjoy guided tours and heritage displays.

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

Contact info

135 Bay Thorn Drive
Markham, Ontario
https://www.markham.ca/heintzmanhouse

Architecture

Year built: 1817
Building type: Attraction Historical landmark Historical house

Dates/hours open

Sep 26, 10:00am - Sep 26, 04:00pm

Heliconian Hall Doors Open Toronto

Heliconian Hall

Heliconian Hall, home to the Heliconian Club, is one of the oldest associations of its kind in Canada. Founded in 1909, it gives women artists, writers, musicians, dancers and actors opportunities to work together creatively. The hall itself dates to 1876 when Yorkville was still a village. Check out the simple exterior, a Victorian rose window and carved ceiling rafters.

  • Kid-friendly
  • National Historic Site (Canada)
  • Partial wheelchair access
  • Site is protected by the Ontario Heritage Trust
  • Washrooms
  • Photography allowed

Contact info

35 Hazelton Avenue
Toronto, Ontario
https://heliconianclub.org

Architecture

Year built: 1876
Building type: Historical landmark Gallery

Dates/hours open

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

Heritage Building and Ottawa City Hall Doors Open Ottawa

Heritage Building and Ottawa City Hall

Originally built as the Ottawa Normal School, this site is now Ottawa City Hall. Built in the Gothic Renaissance style, it reflects the influence of the Parliament Buildings — with Italianate windows and Romanesque columns. Purchased by the municipality in 1987, the restored building opened as city hall in 2001, housing the offices of the Mayor, City Manager and City Clerk.

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

Contact info

110 Laurier Avenue West (Elgin Street entrance)
Ottawa, Ontario
https://ottawa.ca

Architecture

Year built: 1875
Building type: Government building
Architect: W.R. Strickland and Kivas Tully

Dates/hours open

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

Heritage Centre, The Doors Open Cornwall and SDG Counties

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

Heritage London Foundation Doors Open London

Heritage London Foundation

At this year’s Doors Open London, join Heritage London Foundation to explore the historic courthouse where the city’s beginnings were established 200 years ago. Discover courtroom tours, engaging talks and a compelling historic exhibit. Visitors can enjoy guided tours, speak with knowledgeable guides and experience downtown’s origins through this immersive journey.

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

Contact info

399 Ridout Street North
London, Ontario
Email: info@acolondon.ca
https://acontario.ca/

Architecture

Year built: in 1800s
Building type: Courthouse Government building Historical landmark
Architect: John Ewart of York (Toronto)

Dates/hours open

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

Hillary House National Historic Site (The Koffler Museum of Medicine) Doors Open Aurora

Hillary House National Historic Site (The Koffler Museum of Medicine)

Discover Hillary House National Historic Site, the Koffler Museum of Medicine, an immersive window into Aurora's past. This 1862 landmark blends striking Gothic Revival architecture with a fascinating collection of medical instruments and Victorian history. Wander beautifully preserved rooms, uncover stories of the families who lived and worked here and experience one of Canada's best preserved 19th century doctor's homes.

  • Adaptive reuse
  • Guided tours available
  • Kid-friendly
  • National Historic Site (Canada)
  • Partial wheelchair access
  • Self-guided tours available
  • Washrooms
  • Photography allowed
  • Rental opportunities

Contact info

15372 Yonge Street
Aurora, Ontario
Email: prose@aurora.ca
https://aurorahs.com

Architecture

Year built: 1862; additions in 1869 and 1888
Building type: Historical landmark Historical house Museum
Architect: Henry Harris

Dates/hours open

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

Hillside Outdoor Education School Doors Open Toronto

New

Hillside Outdoor Education School

The original Hillside S.S. No. 4 was built around 1853 and became a “free school" in 1855. In 1976, the school closed for regular classes and began offering science and outdoor education programs instead. Currently, over 7,000 Toronto District School Board students visit annually, exploring the Rouge National Urban Park and learning more about our planet and the environment.

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

Contact info

2259 Meadowvale Road
Toronto, Ontario

Architecture

Year built: 1853
Building type: Schoolhouse

Dates/hours open

May 23, 10:00am - May 23, 04:00pm

Hindu Temple of Ottawa-Carleton Doors Open Ottawa

Hindu Temple of Ottawa-Carleton

The design, architecture and interior shrines of this temple follow traditional Hindu architectural styles. Deities in these shrines are made of granite, marble and bronze. The large prayer hall hosts ceremonies throughout the year. The temple also houses a reference library on Hindu religion and philosophy. When visiting, everyone is required to remove their footwear.

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

Contact info

4835 Bank Street
Ottawa, Ontario
https://hindutemple.ca

Architecture

Year built: 1984
Building type: Place of worship

Dates/hours open

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

His Majesty's Royal Chapel of the Mohawks Doors Open Along the Grand

His Majesty's Royal Chapel of the Mohawks

His Majesty’s Royal Chapel of the Mohawks is the last surviving building of the Mohawk Village and the oldest surviving Protestant church in Canada. The chapel features eight stained-glass windows that tell the history of the Six Nations people. They continue to hold special services here — like Easter, Thanksgiving, Indigenous People's Day and Christmas. They can also host weddings.

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

Contact info

301 Mohawk Street
Brantford, Ontario
Email: SNTMPC@sixnations.ca
http://www.mohawkchapel.ca

Architecture

Year built: 1785
Building type: Cemetery Place of worship

Dates/hours open

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

Historic SDG Jail Doors Open Cornwall and SDG Counties

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.

  • 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 15, 10:00am - Aug 16, 04:00pm

Historic Walking Tour - Grand Designs: Building a Life in 19th Century Barrie Doors Open Barrie

New

Historic Walking Tour - Grand Designs: Building a Life in 19th Century Barrie

Barrie was forever changed by the 1869 arrival of one extraordinary family. Retrace the footsteps of architect Shearman Bird and his wife, Amy ‘Amoi’ Bird. The tour highlights significant places associated with the Bird family, such as private homes and grand architectural marvels, taking you through Barrie’s historical neighbourhoods and offering stunning views of Kempenfelt Bay.

  • Parking
  • Photography allowed

Contact info

Meet at Meridian Place, 30 Simcoe Street
Barrie, Ontario
Email: info@barriearchive.ca
http://www.barriearchive.ca

Architecture


Dates/hours open

Sep 26, 01:00pm - Sep 26, 02:30pm

Historic Walking Tour of Downtown Collingwood Doors Open Simcoe County

Historic Walking Tour of Downtown Collingwood

Explore Collingwood’s charming historical downtown on this lively one-hour walking tour with a knowledgeable local guide. Uncover the town's rich past and vibrant present through humorous stories, striking architecture, public art and great recommendations for what to see and do while you're in town. Discover hidden gems, iconic landmarks and tales of the people who shaped the town.

  • Guided tours available
  • Partial wheelchair access
  • Site has blue and gold provincial plaque
  • Site is protected by the Ontario Heritage Trust
  • Photography allowed

Contact info

Meet at 44 Hurontario Street
Collingwood, Ontario
Email: collingwoodfreewalkingtour@gmail.com
https://collingwoodfreewalkingtours.com

Architecture

Year built: Various

Architect: Various

Dates/hours open

Sep 19, 11:00am - Sep 19, 12:00pm

Historic Zion Schoolhouse Doors Open Toronto

Historic Zion Schoolhouse

This schoolhouse was built in 1869 by the farming families of the rural community known as L'Amoreaux. Several generations of children attended the school until it closed in 1955. One of hundreds of schoolhouses that used to dot the Ontario landscape, the Zion Schoolhouse serves as a rare reminder of how education was provided in rural areas in the past.

  • Adaptive reuse
  • Full wheelchair access
  • Kid-friendly
  • Parking

Contact info

1091 Finch Avenue East
North York, Ontario

Architecture

Year built: 1869
Building type: Attraction Historical landmark

Dates/hours open

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

Historical Walking Tour: Back Streets of Stouffville Doors Open Whitchurch-Stouffville

New

Historical Walking Tour: Back Streets of Stouffville

Stroll the back streets of Stouffville Centre North, established as a Heritage Conservation District in 2024. Take the road less travelled to learn about the District, Heritage Awards and Commemorative Plaquing Program. Tour departs from the Clock Tower (19 Civic Avenue, Stouffville) at 11:00 AM. Duration: 1.5 hours.

  • Guided tours available

Contact info

19 Civic Avenue
Stouffville, Ontario
Email: wsmuseum@townofws.ca

Architecture


Dates/hours open

Jun 06, 11:00am - Jun 06, 12:30pm

History and Heritage Walking Tours Doors Open Stratford

New

History and Heritage Walking Tours

Join one of these 30-40-minute walking tours, beginning and ending at Stratford City Hall. Led by Stratford Walking Tours, you will explore the stories of the city hall, the courthouse, the Shakespearean Gardens, the Avon River and Memorial Gardens Stratford. Each 1-1.5-kilometre tour has a maximum of 25 participants. No registration required (first come, first served, rain or shine).

  • Guided tours available
  • Photography allowed

Contact info

Tours depart from the City Hall front steps (1 Wellington Street)
Stratford, Ontario

Architecture

Year built: Various

Architect: Various

Dates/hours open

Apr 18, 11:00am - Apr 19, 02:00pm

History in Hamilton Self Guided Tour Doors Open Hamilton

New

History in Hamilton Self Guided Tour

Downtown Hamilton is full of rich history, and the BIA's self-guided historic tour will take you through its most significant chapters to the quirky excerpts that might just surprise you. There's a fun fact for everyone just waiting to be uncovered! Made in collaboration with Hamilton Public Library and historian Bill King.

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

Contact info

Downtown
Hamilton, Ontario
https://downtownhamilton.org/things-to-do/memory-lane/

Architecture


Dates/hours open

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

HOK Toronto Design Studio Doors Open Toronto

HOK Toronto Design Studio

HOK's Toronto studio creates award-winning interiors, architecture and planning solutions. Its technology-enabled workplace is balanced with inspirational art, sculpture, natural light, 360-degree views and a welcoming esthetic. It provides an environment for heightened collaboration, engagement and creativity. Located on the 11th floor, it provides excellent views of the downtown core, including City Hall, the Canada Life Building and Ontario courts.

  • Full wheelchair access
  • Guided tours available
  • Washrooms

Contact info

480 University Avenue, Suite 1100
Toronto, Ontario
https://www.hok.com/studios/toronto

Architecture

Year built: 1971
Building type: Commercial
Architect: Page + Steele

Dates/hours open

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