For as long as Diane Hoskins can remember, she wanted to be an architect. It began with Legos as a child, and eventually led her all the way to architecture giant, Gensler— an unusual company with two CEOs. One CEO is based in Los Angeles, and the other CEO, Hoskins, is based in Washington, DC. Together, they've created a unique leadership model where hierarchies don't really matter and internal collaboration— not internal competition— is rewarded.