Location: 42.4451840, -88.1651970
Photos to support your claim: Directly from their website confirming that it is closed.
Additional information: This is a venue on an island that is only open during summer months and even then the only safe access is by boat. It should be removed being that it's seasonal/temporary due to the freezing northern cold temperatures in Chicago land and north. It's not even open half the year and for the most part unaccessible when it's closed.