![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgNS8ZTCzXx4jhClcrNwmLCdkSTGnP71_zZ6gNVb6Jn4-qrgzAs46f1O_1EEpNmJ6KeJgCjMwXi3EJm4XxOk-Z85FWjI7HjqYnKel-sd4rUNHkq1JkDanpYUp6B1cG0fWt5TPSOXD63smE/s400/LensImpressions-03-63.jpg)
This is Northwestern Atrium Center /Citicorp Center ...
completed in 1987 ...
designed by the architectural firm Murphy/Jahn ...
This 42 story, 588-foot tall glass-&-steel structure ...
Click on the image for enlarged view ...
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhjoVluQqqK7UDxL9JJrD9Ea_MKdVl5zBOlo5cB3Hy2Uvj3Uws-ySK_6vU7y6kaLbu_nxgjBWpeZETY39bVL1pB3SdMnwElDwO4nnfYqxbCmFhIOJAELJulLshSOri-5LyWWM0PR-8rvMc/s400/lensImpressions-04-20.jpg)
The first two floors house a major commuter railroad station serving the north and west suburbs.
- The north and south façades resemble a waterfall with cascading curves of blue glass. The architect used similar forms on the interior of the Chicago Board of Trade Addition.
- The main entrance on Madison is a recessed telescoping archway, a device used by early Chicago architect Louis Sullivan in the Transportation Pavilion at the 1893 World's Fair.
- This is the tallest all-glass building in Chicago.