Doors Open Ontario presenting sponsor
Doors Open Ontario presenting sponsor


Doors Open Ontario:

Note: This event may not be part of the current Doors Open Ontario season. For up-to-date events and listings, visit the Home page. For Toronto and Ottawa, check their local websites to confirm.

St. Marys

in-person event information

Saturday, September 23, 2023, from 10 a.m. to 4 p.m.

Experience St. Marys, where history meets modern adventures set against the picturesque backdrop of the junction of the Thames River and Trout Creek. You will instantly marvel at historical limestone architecture that gave this small town its nickname the "Stonetown.” As you explore St. Marys during Doors Open, you will experience first-hand how it is shaped by the natural wonder of the local landscape and the spirit of its residents.


Community information

Close to everything yet removed from the ordinary, St. Marys is a town that works – and a town that plays.

From being a grain and agricultural centre in the late 1800s to becoming an incubator for unique businesses, a hub for artists and artisans, and the host of many community events, St. Marys illustrates why small towns work – charming history paired with modern amenities, all wrapped in an extraordinary setting, in any season.

The Stonetown is an apt moniker for St. Marys as the town is filled with unique architecture that features locally quarried limestone. The stone buildings reveal much about the town's history and, in many cases, the development of the town can be witnessed in its architecture.

From stunning architecture to picturesque vistas, St. Marys has a special character all its own. To assist in the preservation of this character, the Town of St. Marys designated its downtown core as a Heritage Conservation District in 2012.

St. Marys is conveniently located just 20 kilometres (12 miles) from Stratford, 40 kilometres (24 miles) from London and 175 kilometres (108 miles) from Toronto.

We look forward to your visit!


Become a volunteer

Volunteers are an essential part of Doors Open St. Marys. Volunteers do not need any previous experience to participate in Doors Open and will be provided with information and a formal training session prior to the day of the event.

Volunteer roles

  1. Tour guides of historical buildings and participating sites
  2. Greeters to meet the public and organize tour groups
  3. Counters to assist the greeter and count participants

For more information or to sign up as a volunteer, contact us at


Contact information

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