We twice tried to visit Purina Farms. The website said it would be open the both times. The first is was not, and the second we were told that there were no future visitor plans. We have not tried again.
There is also a "Transportation Museum" not far off. That was supposed to be open the first time, but had just been taken over by the state(?) and was closed that Monday. We got in the second time, they had a DC3, A small towboat and a huge collection of old rail cars. I mentioned that to a friend and he told me that has changed. They still have the towboat and corrected that the DC3 is really a C-47 in invasion stripes and there there is now a field of historically important rail engines and other such. That all matters if you care and if you do, check them out on the web and with Trip Advisor.
You will need to drive to this and there may not be room in the lot for the 5er.
Matt