
The one weekend a year you can peek inside Toronto's most fascinating buildings.
When
May 23–24, 2026
Where
150+ participating buildings city-wide
Area
Downtown
Cost
Free
Format
Indoor & Outdoor
Attendance
200K+ visitors
Running Since
2000 (26 years)
Family Friendly
Yes
VT Insider Tip
Skip the mega-popular spots (Casa Loma, City Hall) unless you arrive at opening time. The best experiences are at smaller sites with no lines — old churches, private clubs, and industrial buildings that never open otherwise.