Ok.....this is a polish joke in hiding right? In case you can not remember back to 8th grade i'll refresh your memory.
How do you confuse a polish guy? Put him in a round room and tell him to sit in the corner.

Seriously though there is a round barn about 5 to 10 miles south of the Chicago land speedway in Joliet Illinois, it's a riding stable i think for rich kids out of chicago. I'll try to do some research on it, i pass it all the time.