The top was typical of the period - an American swipe of the French Mansard roof, projecting the same virtues of civilization and empire.
Other than that, it's rather straightforward between base and crown.
Surely it still stands, you think. Well: it caught on fire (see "fireproof," op cit) in 1946, killing 61 people. It was repaired and reopened, and Chicago enacted new laws to prevent such things happening again. It lasted almost three more decades before it was raised for an office tower.