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 2016 program 

From April to October, the Ontario Heritage Trust invites you to explore Ontario’s heritage treasures during Doors Open Ontario 2016. The season kicks off April 23 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 2016 focuses on the province’s rich legacy of medical science and innovation. The number of innovations in medical science, procedures and technology conceived in Ontario is extensive and their stories fascinating. Join us on a journey of discovery. Featured sites include hospitals, medical schools and laboratories that showcase Ontario’s and Canada’s achievements in medicine. Learn more about ingenious innovators and their remarkable discoveries while you uncover the places that made medical history. 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 2016 features hundreds of communities participating in 43 events 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 6.2 million visitors to explore over 15,000 amazing sites.
– Visitors to Doors Open Ontario events have spent over $53 million 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.