illinois had deeded 

                             the jackson park site to the park district

with the

                      express restriction

     that the land “be held, 

                                      managed and controlled

             by them and their park, for the recreation, health and benefit 

                                                               of the public,

                                                                            and free to all.

.”

         construction of the various proposed buildings in the park

                                         destroys

                                     the public parks

                     recreational purpose

                                                               of open space,

                           “free

                                   to

                                    all

                                     persons

                

                                                        forever.”