Join us for our yearly Summer Solstice open house on Friday, June 20 from 7:30pm – 9:30pm! We’re thrilled to be partnering with the Northwest Suburban Astronomers, where they’ll provide observing outside on our South Lawn if clear. We’ll also have exciting family activities that connect us to our Sun, engaging talks, an ice cream truck with treats to purchase, and more for your family to enjoy. 

The open house will take place rain or shine. This does not include use of telescopes within the building. Reservations are required, and tickets can be purchased on our ticketing website. Tickets for this event cost $5 per child and $10 for adults and are available online only. There will not be parking onsite at the Observatory. Ticket holders must park at Williams Bay School and board an accessible trolley that will run a continuous shuttle between the school and observatory during the Open House. Stay tuned over the coming weeks for a full schedule of events!

To reserve tickets, click here to go to our ticketing website!