Free admission!

Join us for the Friends of Retzer Nature Center's Annual Science Fest!

Waukesha County’s Science Fest is a celebration that connects people with science, technology, engineering, art, and math (the STEAM disciplines) in fun and exciting ways! Attendees of all ages are encouraged to explore Under the Lens and engage in a variety of interactive activities and discover how science mixes into our everyday lives and shapes our future.

Enjoy programs and hikes for either adults or families-something for everyone! This free event is held rain or shine and is recommended for all ages with programs for both Adults and Kids/Families!

Additionally, the Horwitz-DeRemer Planetarium will offer a special showing of Galileo: The Power of the Telescope at 11 a.m., Noon and 1 p.m., courtesy of the Friends of the Horwitz-DeRemer Planetarium but donations are appreciated. This show is recommended for ages 5 and up.

Extra Special Event: Stick around after Science Fest to enjoy "Fire and Ice" by Mad Science of Milwaukee, Inc (sponsored by the Friends of Retzer Nature Center). Children will be dazzled and entertained as they interact with our Mad Scientists! This spectacular show will thrill audiences with impressive science experiments.