Space & Spaces

Yerkes tours are not what you expect. A typical observatory tour would involve mostly astronomy, but Yerkes tours aren't typical. Our upbeat and engaging guides discuss astrophysics, Romanesque architecture, Geneva Lake District history, restoration, preservation, electricity, landscape design, photography, engineering, art, and the stories of the humans from around the world who made their mark on science in Yerkes' spaces.

Hidden Spaces

Our behind-the-scenes Director's Hidden Spaces tour takes you where the public has never been allowed to visit. The peculiar corners and rooms in the attic and basement of the 65,000 sq. ft. facility are just waiting to be explored! See the back-of-house infrastructure of Henry Ives Cobb's masterpiece of Beaux Arts and Romanesque design. This tour highlights the elaborate confection of ornament and order mixed with the ugly, dusty, and unchanged workspaces of 125+ years of astronomers. From the tops of the three domes to the elevator floor to the subterranean dungeon, every detail tells a story.

Tours for All

We work hard every day to have each visitor leave our spaces filled with joy, humor, knowledge, and a sense of wonder. Yerkes was saved from almost certain demise, and we wildly celebrate its survival on each tour. Our mantra of "Nine to Ninety" means that we strive to have nine year olds, ninety year olds, and everyone in between have experiences here that are uplifting and entertaining. We're looking for guests of all ages, backgrounds, and brains to be profoundly inspired by our tours.

School Visits

Student groups will tour Yerkes and experience the history and wonder of our observatory first-hand. Following the tour, groups will spend time safely observing the Sun (weather permitting) or engaged in a hands-on, NGSS-inspired activity. Each visit will take approximately 1.5 hours during school hours.

Host An Event

Whether you are planning a corporate retreat, organizing a private party, or hosting a wedding, Yerkes Observatory's botanical splendor, historic architectural spaces, and thoughtful staff provide a special atmosphere for any occasion.

Group Tours

Schedule your group tour with us! We welcome conventions, families, community organizations, and groups of all kinds. All tour bookings support the restoration and preservation of this international landmark.