The Rideau Township Archives began as North Gower’s town hall in 1876 until new township offices opened in 1967. It is interesting for its history and its architecture – featuring an unusual cupola. After being restored, it was among the first of the township’s buildings to be designated. The current exhibit features this initial revitalization in the 1980s.

This church is notable for its exquisite local stained glass dating from the early 20th century to the 1980s. Their windows illustrate some of Ottawa’s early stained-glass works, with a strong influence by Tiffany. The building also tells the story of a creative and tenacious congregation that has had a spiritual home in what’s now Old Ottawa East since 1877.

The Centretown Mosque was constructed in 1911 as the First United Church — the site of Canada’s first mixed-raced marriage. Since then, it was also the Ottawa Chinese-Canadian Heritage Centre. Today, it is the first mosque to serve Ottawa’s Muslim community. Fundraising campaigns are currently underway to help preserve the site’s history — including two beautiful halls, an organ and stained-glass windows.

In 1975, CKCU became the first campus-based community radio station in Canada. It continues to be a pioneer in community broadcasting, serving as a voice for many Ottawa identities and communities not served by the mainstream media. Offering over 100 programs in over 10 languages, CKCU is committed to diversity. Come witness live radio in the making!

Constructed in 1961, this is one of two treatment plants operated by the City of Ottawa to supply drinking water to almost one million people. Its source water is the Ottawa River. The treatment process removes undesirable substances — such as colour, suspended particles, algae, bacteria and viruses. Over the years, the site has seen significant expansion and modernization.

This state-of-the-art building, located within the Earnscliffe National Historic Site, has been the official residence for British high commissioners for more than 90 years. The building has LEED Gold status, with reduced water consumption inside and native and drought-resistant vegetation throughout the grounds. Note: Due to renovations, the High Commissioner’s residence will not be open, but the grounds will be.

The Bank of Canada head office is known for its unique architecture — balancing modern and classical styles. The original granite building spoke of stability and tradition. In 1979, it was partially enclosed by modern glass office towers and a large indoor atrium. The complex has continued to evolve, with the addition of a conference centre, museum and an outdoor plaza.

This building was constructed on the eve of the Second World War as a church and bomb shelter. During the war, people came to pray to the Theotokos of the Passion icon for the safe return of their loved ones. All the young community men returned from the war. This icon remains a source of comfort during times of need.

Formerly the Terry Fox Centre, 1805 Gaspé is now a community, multi-tenant, multi-purpose building that houses a farmers’ market, private school, day care centre, Caribbean catering business and home to neighbourhood programs. This three-storey building has been beautifully renovated and repurposed, with an airy foyer that greets visitors. The addition of an elevator makes all floors fully accessible.

Established in 1992, the Jami Omar Mosque was located inside a renovated bungalow. But, in 2003, construction began on a new mosque located on the same property. Over the next 15 years, the new and much larger mosque was constructed. It provides various services for the community — including marriages, family counselling and funeral services.

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.

The Ingenium Centre houses Canada’s science and technology collection, with more than two million archival, trade literature and library materials, and more than 150,000 artifacts. The Centre provides a controlled environment to protect the artifacts for the benefit of generations to come. It is designed to properly house artifacts made of materials such as plastic, wood, paper, textiles and ivory.

The Library and Archives Canada is in a prominent structure, comprising two symmetrical four-storey wings that wrap around a central nine-storey tower block. It’s located at the western extremity of Ottawa’s Parliamentary Precinct overlooking the Ottawa River. Clad in grey granite, the building is accented with polished granite panels and brushed aluminum railings. The building houses the National Library collection.

The Gladstone Theatre has been a theatre for nearly 50 years. Initially a garage, it was turned into a 230-seat theatre in 1983 by the Great Canadian Theatre Company, with further renovations in 2007. By 2016, it was regularly hosting 12 stylistically diverse theatre companies, with more than 27,000 tickets being sold per year. Come and explore this unique site!

Founded in 2019, the Ottawa Glassblowing Co-op is located in the heart of Ottawa near Little Italy. Their mandate is to foster a glassblowing co-operative that operates inclusively to support the artistic creativity, learning and growth of its members and to educate the public in the art of glass. Come and see glassblowing demos by local artists!

The ByWard Market has been Lowertown’s focal point since 1848. This particular site has served as a market since 1875. The present building is the fifth to house the market. Home to food merchants, specialty boutiques and artisans operating in indoor and outdoor spaces, the ByWard Market Building is a landmark. For Doors Open, enjoy special tours, displays and presentations.

The capital region’s only therapeutic riding facility accredited by the Canadian Therapeutic Riding Association provides therapeutic riding lessons and equine-assisted programming for children and adults with physical, developmental and learning disabilities. Situated on over 8 hectares (20 acres) of pasture and trails, this fully accessible facility includes an indoor and outdoor arena, box stalls and a classroom for additional programming.

Come and visit this plaza during Doors Open Ottawa. Construction is underway to restore and modernize the Centre Block and advance construction of Canada’s new Parliament Welcome Centre. Though the Centre Block is currently closed, visitors during Doors Open can view a special exhibit featuring videos, images and information about the design plans for the building and the Parliamentary Precinct.

Take a behind-the-scenes tour of Ottawa’s oldest stone building. The Bytown Museum offers tours of the Commissariat Building throughout the day. Come check out their new temporary exhibit and award-winning gallery renewal, a showcase of their historical costume collection and their vault. Enjoy a fresh lemonade next to the Ottawa lockstation, part of the Rideau Canal UNESCO World Heritage Site.

With over 17,000 artworks by over 3,000 artists, the Canada Council Art Bank houses the largest collection of contemporary Canadian art in the world. The collection houses paintings, sculptures, drawings, photographs and prints by emerging and established artists, including a significant number of Indigenous artists. The collection is also regularly featured at the Canada Council for the Arts main office.

The Canadian Conservation Institute (CCI) and the Canadian Heritage Information Network (CHIN), part of the Department of Canadian Heritage, were created in 1972 to advance and promote the conservation of Canada’s heritage collections. The building houses over 20 laboratories, metal and wood workshops and over 100 offices. Don’t miss “Captain Conservation,” an imposing fiberglass sculpture over the front entrance.

This award-winning building serves a representational role for the Ismaili Imamat in Canada, offering a centre for building relationships, enabling quiet diplomacy, and disseminating knowledge and information, while reflecting the humanistic/humanitarian agenda of the Aga Khan Development Network and its associated institutions. Inside, the play of light on transparent and translucent surfaces creates a dynamic visual effect.

The Diefenbunker is Canada’s most significant surviving Cold War artifact. It is an impressive four-storey underground facility that operated as the country’s central communications headquarters during the Cold War, ready at any moment in case of a nuclear attack. Now a museum, the Diefenbunker offers a one-of-a-kind experiential learning environment, coupled with award-winning programs, events and exhibitions. Registration required.

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. The Ottawa Sports Hall of Fame is now permanently housed here.

Pinhey’s Point Historic Site stands as a testament to 19th-century upper- and middle-class rural life. Built in four stages from 1820 to 1849, the Georgian-style house maintains many of its original features, including the imposing entrance and staircase, servants’ quarters and 1860s wallpaper. Explore the history of rural water, from dowsing to boring wells, in a new exhibit.