SOLD OUT – Open Houses
Our Open Houses are sold out for 2026. Check back for more info in 2027! Hands-on discovery for all ages. Interactive demonstrations, themed evenings, and joyful exploration across science, nature, history, and the arts.
Director’s Hidden Spaces
Wind through staircases, corridors, and tucked-away rooms rarely open to the public. A behind-the-scenes look at the observatory few get to see.
Space & Spaces Tour
Stand beneath the world’s largest refracting telescope. Explore sweeping architecture and the human stories that shaped modern astronomy.
Frostlights
Yerkes transforms into a winter galaxy of light and sound inside the architectural masterpiece dome housing the world’s largest lens telescope.