Wow, back-to-back birthdays for great, Chicago-based, modernist architects. Yesterday it was Louis Sullivan. Today, Daniel Burnham, who is equally famous as an early urban planner. As Director of Works for the Chicago World's Fair in 1893, Burnham oversaw all building projects at the site, including the Court of Honor (below).
Burnham also designed (among many others) the famous "Flatiron" building in New York: