Door Open Toronto, a rare chance to explore Toronto from the inside, gives visitors free access to historic landmarks, theatres, studios, places of worship, and hidden infrastructure sites across the city.

Doors Open Toronto allows residents and visitors to step inside some of the city’s most interesting spaces and learn more about the history, architecture, and communities that shape Toronto.

This year’s event takes place on May 23 and 24, with more than 160 sites participating across the city. Since it began in 2000, Doors Open Toronto has become the largest event of its kind in Canada and one of the largest in the world.

The 2026 theme, “The World in a City,” highlights Toronto’s multicultural identity and the stories, traditions, and communities that have helped shape the city over generations.

One of the most appealing parts of the event is the opportunity to experience Toronto in a different way. Many participating locations are normally closed to the public or charge admission during the rest of the year. Even longtime residents often discover places they never knew existed. Some sites offer guided tours, exhibitions, talks, family activities, and behind-the-scenes access. Popular locations often include historic buildings, museums, theatres, universities, and city infrastructure spaces that people rarely have the opportunity to see up close.

Most sites are open from 10 a.m. to 5 p.m., though some locations require advance registration or have limited capacity. Visitors are encouraged to check the official schedule and participating locations before planning their route.

For many people, Doors Open Toronto has become more than a weekend event - it is a celebration of the city itself.