• Friends of Retzer Howl
  • Friends of Retzer Apple 
    Saturday, September 17, 2016 
  • 2015 Janboree
    January 15 - 17, 2016
  • Earth Week

    Week long activities April 17 - 23, 2016

  • For volunteer opportunities at seasonal special events at Retzer Nature Center contact us at (262) 896-8074. We welcome individuals and groups.