Experience Doors Open Oshawa, an annual event held on the first Saturday in May. This event provides an opportunity to explore Oshawa's diverse heritage and cultural sites. Spend the day discovering local history, unique Oshawa buildings and spaces while celebrating the communities' heritage.

Doors Open Ontario is a province-wide celebration that provides a unique opportunity to explore and enjoy sometimes hidden and always interesting places and spaces in cities acrosss Ontario, free of charge from May to October.