One of Canada's oldest architectural practices, RDH Architects specializes in architecture for the public realm. The firm recently relocated to a heritage building, where they blended historical features with contemporary design. Highlights include a glazed front façade with views into the studio's creative process, a spiral staircase, and an open-plan interior with 28 workstations, meeting spaces and a collaboration bar.

Redpath Sugar began in Canada in 1854 and has been operating in Toronto since 1959. As one of the last industrial establishments in the Toronto Harbour, Redpath remains a vital part of the community. Explore the site, engage with employees, interact with historical artifacts and enjoy a treat or two along the way. Entrance will be through the Centre Gate.

The Redwood Theatre is one of Toronto's remaining original vaudeville theatres, and continues to operate as a multidisciplinary arts and entertainment venue focusing on music and circus. It is also an arts and innovation centre — supporting young artists in developing careers and presenting their work to public audiences — a professional aerial-circus training centre and a multi-use entertainment space.

RevelHouse is a unique architecture practice in the Toronto market. They focus on what they've coined "social architecture," which encompasses attractions, mixed-use projects and even multi-family residential spaces. Clients have included Cineplex, Mattel, the NBA, Splitsville and Pickleplex. During Doors Open, come and see work from across the globe and discuss how “social architecture” contributes to create compelling spaces.

Built in 1914 as a silent-picture theatre, this three-storey building has been revitalized into an environmentally sustainable hub that offers accessible programming and arts initiatives centred around marginalized BIPOC communities. Retaining the building's original heritage and charm, the restoration highlights exposed brick and wooden posts. Featured in this green building is a restaurant, rooftop garden, co-working areas and galleries/event spaces.

Rosedale United’s sanctuary, with its pointed arches and vaulted ceilings, draws the eye upward, creating a sense of height and grandeur. The vibrant stained-glass windows fill the space with ethereal light, enhancing its spiritual atmosphere. The sanctuary also has excellent acoustics, as demonstrated by their Casavant organ’s rich, resonant tones. Restored in 2005, the organ now boasts 2,637 pipes.

Scadding Cabin, Toronto's oldest surviving building, was built for John Scadding, John Graves Simcoe’s assistant. This one-room house was acquired by the York Pioneers in 1879 and rebuilt on its present site in time for the inauguration of the Toronto Industrial Exhibition (now the Canadian National Exhibition). This is recognized as the earliest act of architectural preservation in Toronto.

Archival records and photographs are on display at the Scarborough Archives. The archives contain documents, photographs, maps, cemetery records and a collection of local community histories. Located inside the former W.J. Morrish General Store, it is also the home of the Scarborough Historical Society, which helps to promote, preserve and stimulate an interest in the history of Scarborough.

Nestled in Thomson Park are four heritage buildings that comprise the Scarborough Museum. Hear stories, old and new, that have shaped the ever-changing community of Scarborough. Explore the McCowan Log House, Cornell House and the Hough Carriage Works. Learn how Scarborough developed from land farmed by Indigenous peoples and European settlers into a major suburb of North America's fourth-largest city.

The Second City is the largest improvisational comedy theatre and training centre in Canada. Its list of famous alumni includes John Candy, Eugene Levy, Catherine O'Hara, Martin Short, Dan Aykroyd, Andrea Martin and many others. In June, they celebrate 50 Years of Funny. During your self-guided tour, knowledgeable volunteers and staff will be available to answer questions. Bring your camera! (No tripods allowed.)

Come and tour Spadina House and discover the home of the Austin family from 1866-1982. Period rooms contain furniture and decorative details from the 1920s and 1930s. Co-owned by the Ontario Heritage Trust and the City of Toronto, this site includes three floors, an orchard and the newly created Aki Wiidookaagewin "Ontario Earth Helpers" Indigenous kitchen garden. (No tripods allowed.)

Located inside Metro Hall, Spin Master boasts a colourful and welcoming reception area, anchored by a video wall that introduces you to this children's entertainment company — showcasing some of its hits, from PAW Patrol to Unicorn Academy. Visitors can explore artifacts, get their hands in “kinetic sand” and visit the Playground Café with a mural that features the word "PLAY."

St. George's Hall is a Toronto landmark. Built in 1891 by the St. George's Society, the building has been home to the Arts & Letters Club of Toronto since 1920, a private club formed in 1908, a social club centred on the arts. Founding members include Group of Seven painters, Robertson Davies, Vincent Massey, Marshall McLuhan, Mavor Moore and others.

St. Andrew by-the-Lake Anglican Church is a lovely neo-Gothic wood-framed church surrounded by parkland and lagoons on Toronto Island. It holds services year-round on Sunday mornings. The building has beautiful acoustics and some stunning stained-glass windows. St. Andrew's is the last remaining church on Toronto Island and will celebrate its 141st anniversary this year.

A synagogue until 1937, St. George’s Greek Orthodox Church stands as a dynamic affirmation of the spiritual and artistic achievement of the Byzantine religious tradition. Except for its Romanesque façade and a few Moorish capitals, the renovated structure is now more thoroughly Byzantine in its layout and esthetic décor. The church interior has been entirely painted by master iconographers.

St. George's on-the-Hill has been a landmark in Etobicoke for 180 years. Built in 1847, the church building has undergone many renovations but still incorporates the original structure in the centre of its worship space. Highlights include many stained-glass windows (including the modern "Children of the Bible" window), a Casavant pipe organ, an 1865 font and the parish's small cemetery.

The Chapel of St. James-the-Less is a mid-19th-century Victorian Gothic revival funeral chapel that is picturesquely set atop a small, landscaped knoll just inside the main gates of Toronto’s St. James’ Cemetery. Designed by Cumberland and Storm, it was designated a National Historic Site in 1990. It is enhanced by its elevated position, surrounded by the peaceful cemetery.

St. Lawrence Market is a premier culinary destination, celebrating the best of Toronto's rich food and community heritage. The newly redeveloped North Building is the historical home of the Saturday Farmers’ Market — a cornerstone of the Market's heritage since 1803. The North Market also hosts a diverse range of events, a new café, the Toronto Court Services and multi-level parking.

Built in 1955, this church is recognized as Canada’s first mid-century modern sacred structure. Constructed by Estonian refugees forced to leave Europe during the Second World War, the church maintains their social, linguistic and cultural ties. The 1972 addition and alterations were based on the original design. During Doors Open, enjoy organ concerts accompanied by a male choir.

Established in 1874, St. Thomas's Anglican Church was one of Canada’s earliest Anglo-Catholic parishes, known for its liturgical and musical traditions. The congregation moved into the present building in 1893. Architectural highlights include the hammerbeam roof, the stunning reredos with its hand-carved statues, the octagonal First World War baptistery and the magnificent stained-glass windows by England’s Bromsgrove Guild.

This mental health charity turns an outdated candy factory into a modern, welcoming facility for teens and young adults to access mental health services. Understanding how the built environment influences health and well-being, the architect’s young design team worked directly with participants, counsellors and staff. Explore this site and see what architectural elements have been retained from the original structure.

Terroni’s Adelaide location is part of Toronto’s history. Built in 1852, it housed the York County Court House. Today, it has been converted into a popular Italian restaurant with dramatic columns, a spectacular dining room with fireplaces and a sunlit atrium. Throughout the restaurant, see antique Sicilian puppets on the walls, handcrafted by local artists over 200 years ago.

Anchored under Toronto's Gardiner Expressway, The Bentway is a growing public space — and so much more. Developed through partnerships with the City of Toronto, residents, supporters, artists, city-builders and dreamers, it shows how we can re-imagine the opportunities of urban spaces. During Doors Open, explore the site and the many exhibits and installations that bring The Bentway to life.

The Ismaili Centre, Toronto, is a place of congregation (Jamatkhana) and a community centre, serving as a symbolic marker of the permanent presence of the Ismaili community in Canada. During Doors Open, explore the Centre’s stunning architecture and enjoy a guided tour — including the prayer hall with its crystalline dome. (No tripods allowed.)

Located in the heart of the city, the Japan Foundation, Toronto is on the third floor of the former Hudson’s Bay Centre. By promoting Japanese culture to other countries, they aspire to contribute to the improvement of good international relations with Japan. During Doors Open, visitors can browse the extensive collection of print and audio-visual materials in the library.