In fact, after seeing the Cardinals' Busch Stadium and the Gateway Arch - you're pretty much DONE with St. The parking cost doesn't even justify visiting this once-grand monument. Now, it's whittled-down to a Strip Mall, with a few mom & pop shops sprinkled throughout. The Union Train Station was one the largest rail stations in the US.

Louis, simply because the city is so desperate for business, offering cheap group rates.