Ontario's Tuberculosis Sanatoriums, 1897-1960

April 18, 2019 | Sam

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“It is an appalling reality that, during the first five years of World War II, 36,000 Canadians died of TB, while 38,000 Canadians were killed by enemy action.”

—  Saturday Night newspaper, quoted in Katherine McCuaig's The Weariness, the Fever and the Fret

Tuberculosis (TB) used to impact a huge number of Ontarians. It's hard to even imagine today. If you were alive before the life-saving drug streptomycin, you likely knew someone who had the disease.

To help fight tuberculosis, volunteer organizations ran sanatoriums. Sanatoriums were medical establishments based on the idea that fresh air, bed rest and diet were key to curing the disease. They originated in Germany in 1854 with the Goebersdorf sanatorium (the setting for Thomas Mann’s famous novel, The Magic Mountain).


Ontario's First Sanatorium

In 1897, Gravenhurst, Ontario became home to the third tuberculosis sanatorium in the world — the Muskoka Cottage Sanatorium. Its Joss House gazebo (leftmost structure in the above postcard from Digital Archive Ontario) let patients relax and picnic next to Muskoka Bay. The gazebo was recognized by Ontario Heritage Trust as "a proud reminder of the significant role that Gravenhurst played in the fight against Tuberculosis."

In Ontario, sanatoriums were often located outside of major city centres — partly because it was thought that country air helped the patients’ recovery, but also because of “phthisiophobia,” or fear of tuberculosis. Indeed, significant social stigma surrounded these institutions.


Just For the Wealthy?

Initially, sanatoriums catered to wealthy patients and were almost indistinguishable from country resort hotels. However, as the medical benefits of this treatment became more widely recognized, efforts were made to support patients who couldn’t pay their own way. (This was before Ontario provided free healthcare.)

Sir William Gage was a key player in establishing free medical care for tuberculosis patients. In 1900, he founded the Ontario-based Canadian Association for the Prevention of Consumption and Other Forms of Tuberculosis (today the Lung Association). In 1918, he was knighted for his dedication to the cause.

Driven by Gage, the Association established the first free sanatorium in the world: the Muskoka Free Hospital for Consumptives in Gravenhurst, a sister sanatorium to the Muskoka Cottage Sanatorium. Similar institutions followed, such as the Toronto Free Hospital for Consumptives, also known as Weston Sanatorium.


Decline of Sanatoriums

One image of inside a renovated empty streetcar and one image of the exterior of a streetcar in a grassy area
Interior (left) and exterior (right) of streetcars turned into patient pavillions at Weston Sanatorium, 1951

At their peak, sanatoriums in Ontario were serving huge numbers of patients, and their waiting lists were long. To add more beds, sanatoriums like Weston Sanatorium got creative with their space, using out-of-service horse-drawn streetcars as patient pavilions.

After streptomycin was discovered in 1944, use of sanatoriums in Ontario declined. Many were closed. Others were converted for different uses.

The Muskoka Cottage Sanatorium and the Muskoka Free Hospital for Consumptives went through many renovations, fires and name changes. In 1957 the Free Hospital was sold to the province of Ontario, to be used as a training school for firefighters. In 1960 the Muskoka Cottage was sold to the province of Ontario and converted to the Muskoka Centre, which then closed in 1994.  Today, the Cottage property is fenced and the buildings left unused, with the Joss House gazebo left overlooking the water — a reminder of the site’s importance to our provincial history.

Edit: Post updated on April 24, 2019.


Related Resources




Online exhibits



  • "Her Own Fault," a government-made video demonstrating unhealthy lifestyle, from Library and Archives Canada (1921)