Don't feel bad if you've never seen the plaque affixed to 100 East Wisconsin, explaining the historical relevance of the northwest corner of Water and Wisconsin. It's on the lower level of the building, facing the RiverWalk. I've passed it countless times and never noticed. But one day it caught my eye. I took some photographs and spent some time digging to fill in a bit more of the story of this corner that is the birthplace of Milwaukee.