As a resident of the Badger State I can say that The House On The Rock is bearable for about fifteen minutes. After being in the place for an hour and seeing sixteen gazillion carousels or the worlds largest fake snout collection plus other interminable oddities, I ran from the building screaming at the top of my lungs. I'm only slightly exaggerating. However, it is one of our best tourist traps.
Dear American tourists: when you visit our fair state, please observe the speed limits (especially you Illinois drivers), try not to hit the billions of deer that cross the highways (I've hit three in the last three years), and eat vast quantities of cheese. All the cheese profits goes towards funding the Packers. Thank you very much.