Tour Yerkes on Saturdays, Throughout the Year
Yerkes Observatory is open to the public from 9:45 a.m. to 1:30 p.m. every Saturday throughout the year excluding Christmas and New Year’s Day. Our expert, engaging and entertaining tour guides provide a fascinating program covering the Observatory’s history, architectural detail, astronomical research, and a look inside the 90-foot dome at the 40-inch refractor, still the largest lens-type telescope in the world.
Our general public tours are most appropriate for ages 6 and up.
Guided tours begin at 10:00 a.m., 11:00 a.m., and 12:00 p.m. Most tours last 45 to 50 minutes. We do not accept reservations. A suggested donation of $8 per person is requested to support our public programs. Groups of 20 or more should consider reserving a private program outside of Saturday public tour hours. For availability and pricing, call 262-245-5555, extension 825, or email firstname.lastname@example.org.
The interior of the 90-foot dome is not temperature contolled, so dress appropriately on the day of your visit the same as for any outdoor activity.
Visitors are encouraged to browse our unique gift shop featuring postcards, apparel, photos from the Observatory's archives, jewelry, meteorites, posters, books, aids for viewing the night sky and some unique items found only at Yerkes Observatory.
On Saturdays before or after tours, visitors can view a timeline display on the main floor describing Yerkes Observatory's construction and early history and adorned with dozens of 1890s photographs from the Yerkes archives. Other interesting displays describe comets, galaxies, nebulae, and the death of stars.
Yerkes also features a museum, developed and maintained by a group of talented volunteers with an interest in preserving local histor. Artifacts and personal effects on display in the museum examine the lives of some of Yerkes Observatory's most famous astronomers; people who profoundly affected not only the scientific comunity but also the residents and character of Williams Bay. The museum, open only during Saturday public tour hours, is located in the southeast transept of the main floor.
For more information about all Yerkes tour programs call 262-245-5555 extension 825, weekdays between 9:00 a.m. and 4:00 p.m. Our office is not staffed outside of these ours or on weekends. Tour questions can also be emailed to email@example.com. The mailbox is monitored coninuously.
For more information about all Yerkes tour programs call 262-245-5555, extension 825, weekdays between 9:00 a.m. and 4:00 p.m. Our office is not staffed outside of these hours or on weekends. Tour questions can also be emailed to firstname.lastname@example.org. The mailbox is monitored seven days a week. This page was derived from the Saturday Tours section of the official Yerkes website.