Doors Open Ontario

The Doors Open Ontario 2018 season was a great success. Over 482,000 people visited sites in communities across the province. Thanks to our sponsors, partners and volunteers for their support, and to all who participated.

Hume Cronyn Memorial Observatory Doors Open London

Hume Cronyn Memorial Observatory

During the day, look safely at the sun with a solar telescope, viewing sunspots and prominences on the surface. Take a basement-to-dome tour of the observatory, including a re-creation of observatory director H.R. Kingston’s office, as well as a 1960s-era control room and exhibit on the life of astronomical model-maker extraordinaire W.G. Colgrove. Public stargazing available, starting 7 p.m.

Tell us your story about this site

  • Parking
  • Partial wheelchair access
  • Washrooms
  • Kid-friendly
  • Guided tours available

Contact info

1151 Richmond Street (Department of Physics and Astronomy)
London, Ontario


Year built: 1940
Architect: O. Roy Moore

Dates/hours open

Saturday September 15, 2018
Saturday only: 2 to 10 p.m.; solar observing until 4 p.m.; stargazing starts at 7 p.m.

Hume Cronyn Memorial Observatory 1151 Richmond Street (Department of Physics and Astronomy)