Wis. Stat. § 115.58

The state superintendent may permit the city of Janesville to use portions of the grounds of the Wisconsin Center for the Blind and Visually Impaired at Janesville, which abut on the Rock river, for purposes of operating a city park. Any construction on such grounds is subject to prior approval by the state superintendent. Any agreement pursuant hereto shall be cancelable at the option of either party without liability. Any such grounds so used by the city of Janesville shall be supervised by the city and shall be subject to the ordinances of the city of Janesville applicable to city parks.