The Open Door at Square One is a front-line ministry outreach of the churches of Mississauga that has been ministering since 1974. The Open Door serves people from every background and walk of life. We make every effort to minister to people’s practical, spiritual and emotional needs. We are ministering to people facing unemployment, critical illness, homelessness, marriage breakdown, abusive situations, bereavement, loneliness, single parenting and countless other reasons that cause people to need help. The Open Door is a volunteer-based organization. Please call before visiting on days with bad weather.