U.S. Bank / Firstar Center
777 E. Wisconsin Ave.
1973

The tallest office building in Wisconsin, it was originally called the First Wisconsin Center. Its 42 stories (601') are primarily glass and aluminum with some seven million pounds of travertine marble used throughout the center. It has 5000 windows and 1.4 million square feet of floor space. The bank's original home was the First National Bank Building.