Kit T.
7/29/2025
It was closed when l got there. But that was ok because it was super hot & l didn't want to hang out long. The architecture was amazing and so detailed dating back to 1895. Perhaps on my next...
Yerkes Observatory
Closed
(34)
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373 W Geneva St
Williams Bay, WI 53191
The stars have cast their spell on romantics, scientists, seafarers, and backyard astronomers for ages. Since 1897 Yerkes Observatory has played a leading role in the exploration of the stars and our universe. Now, the site of the Great Refractor telescope is embarking on its next chapter, an independent organization offering new opportunities for you to experience astronomy, culture, and science. Our mission: to nurture the curious minds of a new century. Reopening activities are underway and we’re ready for your visit. Welcome back, star gazers!
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Reviews
4.534 reviews
Dave C.
12/19/2024
The tour is roughly 1 hour and 45 minutes - with a knowledgeable guide who does this for the enjoyment of it. You get a ton of historical background, a few rooms with exhibits, a huge telescope,...
Anne M.
9/2/2024
Yerkes Observatory is an absolute gem in the Lake Geneva area that everyone should visit! This historic place was built in 1897 and has SUCH a rich history in astronomical research. It has beeb...
Lisa S.
12/10/2023
What history! Einstein, Sagan, and Hubble all made significant contributions to the field while working at Yerkes. The building has been beautifully restored, and the individuals giving the tours...
Steve G.
8/5/2024
There's something very special about this place. I think it's the fact that the location dates back to the 1920s, yet the stuff that's going on there is almost science fiction. For most of the...
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