Waukesha County

Howl-O-Ween
Friday, October 18
6:00 – 8:30 p.m.
$15 per carload
Recommended for ages 10 and younger
A Halloween-themed evening filled with scare-free entertainment and activities for the whole family! This event features night hikes, campfire, planetarium shows, children’s games and crafts, a DJ dance party, and food & beverages.

The Horwitz-DeRemer Planetarium will offer a showings every 30 minutes from 6:15 pm to 8:00 pm. Event fee includes one planetarium show admission.

Space Aliens: Looking for Life in the Universe
Join the alien “experts”, Hopeful and Skeptical, as they try to convince each other whether or not life exists beyond earth. Follow their astrobiology arguments from the ocean floor to a journey across the galaxy.


Friends of Retzer Nature Center Members receive FREE entrance into this event. Find out how!


Volunteers are always needed. Contact our Volunteer Coordinator to find out how you or your organization can help!

Environmental Learning Center Hours: 8:00 a.m. - 4:30 p.m.
Retzer Nature Center Ground Hours: Sunrise - 10:00 p.m. (Year-Round)
There is no daily entrance fee at Retzer Nature Center
Park System Office
515 W. Moreland Blvd. Rm AC 230 Waukesha, WI 53188
Business Hours: M-F, 8-4:30 pm (excluding Holidays)
Phone: (262) 548-7801 | Fax: (262) 896-8071
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