St. Louis is famous for lots of things like the Gateway Arch, Anheuser-Busch, and St. Louis Cardinals baseball. There's also lots of historic motorcycles stored in museums around the city.
"The first Indian motorcycle was created by the Hendee Manufacturing Company in 1901. George Hendee and Oscar Hedstrom became co-founders of what was soon to be an award-winning brand. ... However, Indian’s success ran out in 1953, when the company went bankrupt ... By 1998, brand-exclusive production of Indian Motorcycle models resumed. Then, in 2003, Indian Motorcycle Company of America went bankrupt again and ended production. The tumultuous history of the Indian Motorcycle Brand ends on a good note, because in 2011 Polaris Industries acquired Indian Motorcycle, and Indian has been in production ever since."
If you are planning a trip to see The MOTO Museum, please call ahead to confirm it will be open for viewing. The Museum is also an event venue and there may be a private event during normal business hours. https://www.themotomuseum.com/contact/
Since you're nearby, you might want to stop by Fast Lane Classic Cars in St. Charles to see their current inventory of cars and bikes.