Doors Open Ontario is held annually from April to October. Communities open the doors to some of Ontario’s most intriguing and charming heritage sites, buildings, and architectural offices. Be sure to find out more about the Doors Open events in your community, or plan a trip to another Ontario town or city during their Doors Open weekend.

Highlights of the 2017 program 

From April to October, the Ontario Heritage Trust invites you to explore Ontario’s heritage treasures during Doors Open Ontario 2017. The season kicks off April 22 in Guelph and runs on weekends throughout the summer and fall with events in 43 communities across the province.

Satisfy your curiosity and get behind normally closed doors to experience intriguing interiors, where you will be inspired by rare and exceptional materials, craftsmanship and design. From historical houses to modern marvels of construction, Doors Open Ontario has something for everyone!

Doors Open Ontario 2017 is joining the celebration for Canada’s 150th anniversary of Confederation. Canada 150 marks a milestone in our country’s history and Doors Open Ontario 2017 invites Ontarians to explore the past and imagine the future.  Participants learn about heritage conservation, local history and be explorers in their neighbourhoods.  Many of the participating sites offer special activities, such as tours, exhibitions and demonstrations – all free of charge.

Detailed event information and interactive tools to help you plan your Doors Open Ontario experience

Quick facts: 

– Doors Open Ontario 2017 features 145 communities participating in 43 events in across the province.
– Nine out of 10 Ontarians live in a community that has hosted a Doors Open Ontario event.
– Since its inception, Doors Open Ontario has attracted nearly 7 million visitors to explore over 15,000 amazing sites.
– Visitors to Doors Open Ontario events have spent $5 million annually to support local economies.


Doors Open Ontario is a program of the Ontario Heritage Trust, with funding support from the Ontario Cultural Attractions Fund and the Ontario Tourism Marketing Partnership Corporation. The Trust is an agency of the Government of Ontario dedicated to identifying, preserving, protecting and promoting Ontario’s heritage.