Doors Open Toronto 2027: Plan Your Weekend of Free Visits

For one weekend each spring, the doors that are usually shut simply open. Put May 29 and 30, 2027 in the calendar now, and use the winter to work out how you will spend it.

When is Doors Open Toronto 2027?

The City of Toronto says Doors Open Toronto returns on May 29 and 30, 2027. It describes the event as an invitation to explore the city’s most-loved buildings and sites each May, free of charge. The 2027 theme is Behind the Scenes, which the City says invites visitors to discover the spaces, systems and people that keep Toronto running. The City says the public are invited to explore the hidden workings of Toronto, meaning its spaces, systems, jobs and communities. It is a good excuse to look at places you walk past all year with fresh eyes.

The City describes the event as offering rare access to buildings that are not usually open to the public, plus free access to sites that would usually charge an admission fee. That second part is the quiet bonus for anyone who likes a free museum day. Our free things to do guide has more for the rest of the year.

What is Doors Open Toronto?

It is a city-wide celebration of architecture, design and urban exploration, and the City says more than 150 buildings and sites take part each year. Doors Open reveals how what happens outside of public view shapes our everyday lives, through guided neighbourhood tours, talks and access to those buildings and sites.

The idea has a long pedigree. According to the City, France launched the first national Doors Open program in 1984, and Toronto developed its own as a millennium project in 2000. The City says Toronto was the first North American city to offer a Doors Open program, and that Doors Open Toronto has attracted more than two million visits to nearly 700 unique locations since it began. In 2002, inspired by Toronto’s program, the Ontario Heritage Foundation, now the Ontario Heritage Trust, launched Doors Open Ontario.

Where is the 2027 list of buildings?

Not out yet, and we will not guess. At the time of writing, the City’s page is still inviting sites to apply to take part in 2027 by January 8. The Toronto Society of Architects also lists the call for sites, with the same deadline, January 8, 2027. The City also says guided tours must take place on the weekend of Doors Open, May 29 and 30, 2027.

The easiest way to catch the list the day it lands is the City’s CelebrateTO eNewsletter, which sends updates about City-run festivals and events, including Doors Open Toronto. We will update this guide once the City publishes the 2027 sites.

How does the weekend work in practice?

For a clue, look at last year’s paperwork. The City’s 2026 map brochure is the most recent edition we can see, and the 2027 version may differ, so treat this as a feel for the format and check the City’s page for the real thing.

The 2026 map used a legend to mark each site as open both days, Saturday only, Sunday only, new that year, or an experiential activation. It pointed readers to a QR code on the map cover and to the City’s Doors Open page for site-specific programming and physical accessibility details. It suggested reaching sites on foot, by bike or by transit. It also said guided neighbourhood tours and in-person panel discussions have limited capacity, with pre-registration on the City’s site. And it carried a useful reminder: listings are subject to change without notice, so consult the website for the latest information.

What kinds of places take part?

Everything from civic landmarks to small museums. The City says it prefers sites located throughout Toronto, including Scarborough, North York, York, Etobicoke and East York, as well as downtown. It also gives preference to destination clusters, with several venues in one area, which makes a one-neighbourhood day easy to plan.

To show the range, here are a few places the 2026 map listed. They are examples of the kind of site that joins in, not a promise about 2027.

• Downtown: Toronto City Hall, Old City Hall and Osgoode Hall. Our City Hall architecture guide is a good warm-up.
• East end: the R.C. Harris Water Treatment Plant and Todmorden Mills. Read up first in our R.C. Harris guide.
• Scarborough: Scarborough Museum.
• North York: Gibson House Museum and the Aga Khan Museum. Our Aga Khan Museum guide has the background.
• Etobicoke: Montgomery’s Inn.
• Central Toronto: Spadina Museum.

How should you plan your route?

Here is our opinion, not a rule. Pick one cluster per day, choose three sites you really want, and treat everything else as a bonus. If a tour or talk is on your list, register early, since capacity is limited. When the 2027 list is out, line up your picks against the map legend so you know which sites are open on which day.

If you want to practise on the architecture before May, our Toronto architecture walk is a self-guided start, and the pillar page for Toronto architecture collects the rest.

What should you know before you go?

Everything on this page comes from the City and its partners. Dates, site lists, tour registration and accessibility details are published on the City’s Doors Open page, so check there before you leave the house.

Send this to the friend you would bring, the one who has always wondered what is behind that big front door.