So would 200 N Riverside be the tallest building west of the River's branches? I know there's a couple tall ones around Union Station, but I think that the tallest one is a 600-footer...
Also, 200 N Riverside would be a heck of a terminus for the River's main branch. I'd like to see the River canyon ten years from now, with Waterview, TTC, 300 N LaSalle, and Chicago Spire possibly near the mouth.