Urban Exploring The Abandoned St Thomas Psychiatric Hospital
In August of 1937 construction began on what was then known as the Ontario Hospital, St. Thomas. Built on the land of six area farm families, for the purpose of treating people with psychiatric illness, the hospital accepted its first 32 patients in April of 1939. By August of the same year, almost 1100 patients had come to reside at the hospital. Its greatest capacity with over 2,400 patients. Even before construction was complete, the hospital was known as the finest mental health hospital in the country because of its modern design. The site included 460 acres of land for the facility’s food and produce needs.
Shortly after the declaration of World War II in September of 1939, Premier Mitchell Hepburn and the Province of Ontario negotiated to lease the hospital buildings to the Department of National Defence in support of the war effort. By late October 1939, patients were relocated to other facilities across the province and hospital grounds became a training base for more than 60,000 air force personnel in the service, repair and maintenance of RCAF aircraft. At the end of the war the facility was returned to the Ontario Department of Health and restored to a fully functioning psychiatric hospital.
Upon re-opening in November of 1945 the hospital, in the words of Superintendent Dr. Lynch was “the most advanced in the Dominion.” By April of 1958, hospital admissions peaked at a total of 2238 patients. During this time, the facility pioneered many innovative approaches that supported patient health and well-being. One unique development during this time included the establishment of a 463 acre farm that provided staff and patients with the means and opportunity to participate in food production for the entire hospital.
The 1970’s through the new millennium was a time of significant change in the life of the hospital. Of notable interest was the introduction of the forensic mental health program in 1976. This period of time also saw the beginnings of mental health transformation. It was based on a new way of thinking; shifting care wherever possible, from an institutionalized model where some patients could spend long periods of time, often years, within the walls of a mental health facility to living productively in the community with proper support and resources.
In January 2001, St. Joseph’s took over governance of the former St. Thomas Psychiatric Hospital. This reorganization of mental health care was ordered by the Health Care Restructuring Commission (HSRC) in 1997. HSRC directives also called for the divestment of a certain number of long term specialized inpatient beds from St. Joseph’s to hospitals across southwestern Ontario and the construction of two new specialized mental health care facilities, one in London and one in St. Thomas.
The state of the art hospital has been built on the existing lands in Central Elgin- next to and replacing the existing Regional Mental Health Care St. Thomas building. Opened in June 2013, the new facility, entirely devoted to forensic psychiatry, better supports staff and a recovery model of care for patients by creating healing environments, providing a neighborhood and community setting which allows for individual growth and skill development and enables patients to return to community living more successfully.
Complete Virtual Tour of the Abandoned St Thomas Psychiatric Hospital
2014 – Urban Exploring The Abandoned St Thomas Psychiatric Hospital
2015 – Urban Exploring The Abandoned St Thomas Psychiatric Hospital
2017 – Overnight inside The Abandoned St Thomas Psychiatric Hospital
2018 Explore of Abandoned St Thomas Psychiatric Hospital – Final Building to Explore
2026 St Thomas Psychiatric Hospital News Update
I just read an article this morning that Infrastructure Ontario has decided to demolish the entire St Thomas Psychiatric Hospital site, every single one of the 22 buildings on-site.
Apparently this decision was made in order to support the projected 3,000 direct jobs and 30,000 indirect jobs coming to the region when the Volkswagen battery gigafactory opens in 2027.
A representative from IO said: “The buildings are beyond their useful life and pose a health and safety risk in their current state,”
I couldn’t disagree more, this building was made entirely of Queenston limestone and the structure is as solid as they get. The main buildings are still in pristine condition, inside and out, the rear pavilions are definitely in bad condition, but to make that statement is most definitely reaching!
IO has been maintaining power, maintenance and security of this site since it closed in 2013, to this day, electricity still runs through the entire facility, except for the back pavilions.
I can understand that the facility as a whole is not useful for any kind of modern housing – but to demolish every building on the property is extremely irresponsible and dismissive of the history this property holds.
I’ve been inside St Thomas Psych more times than I can remember since my 1st time in 2014. Demolition work will begin later this year and should take about two years.
So, if you want to get a look inside – better get on it!
I still have a whole set of photos and a video from my most recent visit, I’ll try and get that up in the coming weeks.


It is terrible that this building was ignored. Sure it needs repaired, more so in some areas than others, but I honestly believe that Ontario needs a mental hospital, MORE than a battery factory!!!!! Too many people are trying to deal with mental issues, and aren’t getting the attention they desperately need. Some, if not all of the buildings, need to be used. A battery factory could be short-lived.