While this site has participated in Doors Open Ontario in the past, it may not be part of the current season’s program. Please check the Home page for this year’s events and participating sites. For Toronto and Ottawa, check their local websites to confirm.

McMaster Nuclear Reactorin-person Doors Open Hamilton Region

  • In-person
  • Guided tours available
  • Parking
  • Partial wheelchair access
  • Washrooms
McMaster Nuclear Reactor

Canada’s most powerful research reactor is a global supplier of medical isotopes, providing cancer treatments for 70,000 patients annually. Note: Visitors must be over 11 years old and present government-issued photo ID, cannot wear shorts or open-toed shoes, and cannot take photographs inside the facility. McMaster reserves the right to turn visitors away who do not meet these criteria.

Contact info

1280 Main Street West (McMaster University)
Hamilton, Ontario



Year built: 1957-58
Building type:Commercial
Architect: William R. Souter & Associates

Dates/hours open

May 02, 10:00am - May 02, 04:00pm

Saturday only: 10 a.m. to 4 p.m.