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.

Richmond Hill David Dunlap Observatoryin-person Doors Open Richmond Hill

  • In-person
  • Adaptive reuse
  • Guided tours available
  • Kid-friendly
  • National Historic Site (Canada)
  • Parking
  • Site is protected by the Ontario Heritage Trust
  • Washrooms
  • Photography allowed
Richmond Hill David Dunlap Observatory

The Richmond Hill David Dunlap Observatory is a national historic site, designated under the Ontario Heritage Act. Opened in 1935, it was at the forefront of Canadian astronomical research, housing the then-largest telescope in Canada. Today, it is a facility for public education and outreach through city-run programs and partnerships. Please register to tour the Observatory and Administration buildings.

Since 1935, this observatory has been a research centre for the University of Toronto's Department of Astronomy and Astrophysics and a facility for public education and outreach. A popular site for Doors Open Richmond Hill, the David Dunlap Observatory gives us a glimpse into the skies above us from a spectacular facility. During Digital Doors Open, take a virtual tour of the site through the video below. Also, enjoy a short history of the site from the Royal Astronomical Society of Canada. Or learn how to use a star finder to find your way around the night skies.

Contact info

123 Hillsview Drive
Richmond Hill, Ontario

https://www.richmondhill.ca/astronomy

Architecture

Year built: 1935
Building type:AttractionEducational facilityHistorical landmark
Architect: Mathers and Haldenby
Architectural style:Beaux arts

Dates/hours open

May 11, 10:00am - May 11, 04:00pm

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