Nationals week not only benefits Knoxville, but Pella will also see many race fans in town. Karen Eischen, Executive Director of the Pella Chamber of Commerce, says that the relationship works both ways. During Tulip Time each year, many flower enthusiasts will make their way into Knoxville to enjoy their great restaurants and the National Sprint Car Hall of Fame. She adds that the Lake Red Rock area is also a big draw that benefits Marion County as a whole.