Celebrate 90 Years at the Observatory

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Celebrating 90 years of discovery and exploration, the Richmond Hill David Dunlap Observatory (RHDDO) has inspired generations with its breathtaking views of the cosmos.

As a national attraction and treasured educational facility, the RHDDO has brought the wonders of the universe closer to countless visitors, sparking imaginations and igniting a passion for astronomy.

If you have never been there, or have not been for a while, or you are one who often goes, be part of the weekend-long celebration of recognizing nine decades of celestial discovery, community engagement and a bright future of astronomical adventure.

Come explore the stars with us and see how far we've come!