The Horwitz-DeRemer planetarium is owned and operated by the School District of Waukesha. The planetarium is located in the Retzer Nature Center which is part of the Waukesha County Park System.
The Horwitz-DeRemer planetarium is owned and operated by the School District of Waukesha. The planetarium is located in the Retzer Nature Center which is part of the Waukesha County Park System.