@insidertoronto: Join our history club to learn about your city. Go to insidertoronto.ca to join our history mail club! The Toronto Magnetic and Meteorological Observatory was built on the University of Toronto campus in 1840. It helped prove that sunspots affect Earth's magnetic field, served as the city's official timekeeper, and now stands near Hart House as a historic campus building. #toronto #torontohistory #History #Science #architecture

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Saturday 08 August 2026 21:28:18 GMT