<Tr> <Th> Founded </Th> <Td> Wisconsin Dells, Wisconsin, United States (May 1997 (1997 - 05)) </Td> </Tr> <Tr> <Th> Founder </Th> <Td> Jack and Andrew Waterman </Td> </Tr> <Tr> <Th> Headquarters </Th> <Td> Chicago, Illinois, United States </Td> </Tr> <Tr> <Th> Number of locations </Th> <Td> 15 (Two under construction and four under consideration) </Td> </Tr>

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