A stunning Beaux Arts landmark with the world’s largest refracting telescope, newly revitalized and open for pre-booked tours—coverage of the comeback and active events confirm it’s thriving again. ([yerkesobservatory.org](https://yerkesobservatory.org/visit/plan-a-visit/?utm_source=openai), [onmilwaukee.com](https://onmilwaukee.com/articles/revisiting-yerkes-observatory?utm_source=openai))
Day Trips from Chicago (2025)
