Doors Open Toronto is an annual event where approximately 150 buildings of architectural, historic, cultural, and social significance to the city of Toronto open their doors to the public for this free citywide event.

Toronto was the first city in North America to launch a Doors Open Day program.

Staff at many participating buildings organize guided tours, exhibits, displays, and activities to enrich the visitor experience.

In 2012, City TV and Omni Television also came on board as Doors Open Toronto media sponsors.

Doors Open Toronto relies on the support, as well as enthusiasm of hundreds of volunteers.