[ardecila]

Waterview is an interesting bird though...

I'm probably just making this up, but it seems to me that Waterview is the tallest building ever built with a party wall on a side. Most if not all supertalls up to this point have taken up their own block or had an alley or plaza around them. Waterview uniquely shares a wall with the LaSalle-Wacker Bldg. next door. Negating sway, I imagine, is a huge concern given the age of LaSalle-Wacker.