Many of these office towers will be here long after the culture has changed.

Work on a $50 million office tower that will bring at least 1,100 new jobs has yet to start.

And from what she'd told him, he wasn't sure it would be all that easy to get into the office tower.

The heart of the project, a 29-story office tower with 667,000 square feet, was built eight years ago.

Could it work on the scale of an office tower?

But the city plans to level it to build more office towers.

Not until the late 1950's would Chicago again build an office tower with so much glass.

In March 1965 plans were announced for a 45-story, $20 million office tower on the site.

Then, in 1972, when things were still looking up for the company, a modern 26-story office tower was added to the complex.

The building's main use is that of a typical office tower.