Visit the Brightest Light in Canada

All tours are postponed until further notice:
The CLS is currently monitoring the COVID-19 outbreak across Canada and around the world. We are taking proactive measures to protect the health of all CLS users and staff and have cancelled/postponed all tours based on information from the Public Health Agency of Canada. Thank you for your patience.
For updates on COVID-19 measures at the CLS, click here


Thank you for your interest in Canadian Light Source tours! The Canadian Light Source is the brightest light in Canada—millions of times brighter than even the sun—used by scientists to get incredibly detailed information about the structural and chemical properties of materials at the molecular level, with work ranging from mine tailing remediation to cancer research and cutting-edge materials development. During your visit, you can explore the full range of exciting science performed here every day.

Public tours (Advance registration required)

We offer free public tours on Mondays, Wednesdays and Fridays from 2:30 to 3:30 pm. To reserve a spot on a general public tour, please register below. To book a tour for a group of five or more people, see the bottom of this webpage. 

Visitor safety information 

Click below to view a pdf of our safety information, which must be read by all visitors.

Also, please note that we take photographs during tours, which may be used in an official capacity by the Canadian Light Source. Let us know if you would prefer not to have your photograph taken or published.


We have limited metered parking in front of our building (in blue on the map below). Alternate parking is available in lot #4 (in purple on the map) on the U of S campus. This is just west of our building and within walking distance. Parking for buses is not available on campus. Please ask the bus driver to drop off and pick up passengers at the curb in front of the CLS building. 

Connect with us

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Monthly Newsletter

**Newsletters are sent approximately once a month**

Events Notifications

If you’re looking for information on how you can use CLS techniques in your research program, please contact us using this form.

Example queries may include: Feasibility around a potential experiment? A scientific problem we can help you solve? Is your question related to a specific technique? Do you want to know more about how to apply for beamtime?