Bluebulb Projects' The Measure of Things presents:
6,000 is about three times the number of Steps in the Sears Tower.
In other words, it's 2.845 times the count of Steps in the Sears Tower, and the count of Steps in the Sears Tower is 0.3515 times that amount.
(a.k.a. Willis Tower) (Chicago, Illinois) (steps per stairwell)