410 South Blair Street,
Enter the parking lot at Machinery Row. You can only (legally) get there from John Nolen Drive coming into the city. You can drop your gear at the east side entrance to Monona Terrace, then park in the lot. There is no entrance to Monona Terrace parking here. Some might also call this Monona Terrace east. There is usually a port-a-potty here. No guarantee.