Step inside Ontario’s most fascinating spaces with Doors Open Ontario, a province-wide series of free events running from April to October.

From historic homes to modern landmarks, this unique experience gives visitors rare behind-the-scenes access to buildings, cultural sites, and hidden gems that shape communities across Ontario.

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HIGHLIGHTS
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- Free access to heritage buildings & landmarks
- Behind-the-scenes tours of normally closed spaces
- Storytelling from local experts & volunteers
- Mix of historic sites, modern architecture & cultural spaces
- Self-guided or curated exploration across cities

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SEASON (MONTHS)
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April - October 2026, Each city hosts its own weekend event

2026 EVENT DATES (CONFIRMED)

** April
Stratford: April 18 -19
Guelph: April 25

**May
Oshawa: May 2
Hamilton: May 2 - 3
Along the Grand: May 9
Richmond Hill : May 9
Toronto: May 23-24

June
Tillsonburg (June 6)
Whitchurch-Stouffville (June 6)
Ottawa (June 6-7)
St. Catharines (June 13)
Loyalist Township (June 20)

July
Owen Sound (July 18)
August
Haldimand (August 1)
Burlington (August 8)
Cornwall and SDG Counties (August 15-16)

September
Belleville (September 12)
Peterborough (September 12)
Kawartha Lakes (September 13)
Thousand Islands (September 18-19)
Simcoe County (September 19)
Waterloo Region (September 19)
London (September 19-20)
Aurora (September 20)
Barrie (September 26)
Markham (September 26)
Sault Ste. Marie (September 26)

October
Brampton (October 3)
Chatham-Kent (October 3)
Quinte West (October 3)
Niagara-on-the-Lake (October 17)
Whitby (October 17)
Woodstock (October 17)
Niagara Falls (October 18)

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OTHER INFO
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Cost: Free
Format: Self-guided + guided tours (varies by site)
Registration: Some locations may require advance booking
Duration: Flexible (1- 4+ hours depending on stops)

Best Strategy:
Plan your route in advance
Start early (popular sites get busy)

Pick your city, plan your route, and unlock Ontario’s hidden spaces - completely free!