Looking up through the spiraling oriel staircase at The Rookery. What you are actually seeing is the underside of the stairs as I look up the center toward the top floor.
People who take this tour are permitted to photograph the stairs looking up from the second floor, but are not allowed to go to the top floor and take photos of the staircase looking down. This is an office building and the amount of people who would take that trip to the top floor would be too disruptive.
#perspective #root #oriel #staircase #architecture #rookery #chicago #hdr #2019