The remaining, much larger portion, designed by Kevin Roche, John Dinkeloo and Associates, was built in 1973.

All it is a very low glass enclosed marketplace-like little building in the middle of the town.The structure has changed ownership twice since 2008 and is now operated by the corporate hospitality division of Cummins.

The glass building may look simple, but like all Saarinen's projects, every aspect of the space was designed after extensive research of its use.

[4] The bank building only occupied one-third of the site, the rear portion housed a drive-through window and large parking lot surrounded and intersected with trees.

He used littleleaf linden trees as the basis of the space, with euonymus as ground cover and seasonal spring bulbs, begonias, geraniums, and chrysanthemums as accents.

[5] The goal was to create a green space in the middle of downtown Columbus and provide the city with some breathing room.

As the number of automobiles on the streets grew in the early 1950s, spaces like this helped relieve the congestion of busy downtown areas.

[4] On September 18, 2009, the Indiana Department of Financial Institutions closed the Irwin Union Bank and Trust Company and named the Federal Deposit Insurance Corporation (FDIC) as receiver.