Cummins Inc. Irwin Conference Center

Cummins Inc. Irwin Conference Center
500 Washington Street Columbus, IN 47201

Eero Saarinen (architect) with Dan Kiley (landscape architect) 1954 (with additions by Kevin Roche, 1973) Cummins Inc. Irwin Conference Center (formerly Irwin Union Bank and Trust) Designed by Eero Saarinen with landscape design by Dan Kiley, the Irwin Conference Center is a low, glass-walled building set in a grove of trees. Inside, domed lights and an open plan create a bright, welcoming atmosphere that redefined the modern bank as a place of transparency and community. In 1973, architect Kevin Roche designed a glass arcade connecting the 1954 building to the 1910 office building and a three-story addition, incorporating striped glass to help moderate temperature extremes.

The Basics
500 Washington Street, Columbus,
Architect : Eero Saarinen
Landscape Architect : Dan Kiley

Architecture
Completed in 1954
Addition & Renovation Architect: Kevin Roche (Roche & Dinkeloo)
National Historic Landmark, 2001

Meet the Architects

Largely controlled by the Irwin-Sweeney Miller family, the bank was led by J. Irwin Miller, who also was the top executive at Cummins Engine Company. Having become friends with Eero Saarinen during construction of the First Christian Church, Miller turned to Saarinen to design their new bank building.

Miller wanted a building that would change people’s concepts of banking. Saarinen worked with Miller to develop a building that would welcome customers rather than intimidate them. There was a deliberate lack of partitions and offices. Miller said that he wanted customers to see what the bank was doing with their money. The one-story glass pavilion became one of the first open plan and transparent banks in the country, a dramatic contrast to the typical classical stone banks.

The office desks were custom designed by Eero Saarinen and produced by furniture maker Herman Miller. The ceiling features nine opaque domes, not skylights, which act as giant lamp shades reflecting the central custom light fixture. The perimeter overhang provides shading for the glass walls.

Flooring in the lobby and corridors was a one inch thick glazed, split paving brick in a rustic buff color, chosen to hold up to heavy traffic flow and to make customers feel comfortable walking into the building whether they were coming from a factory, a farm, or an office. Window coverings were continuous, floor-to-ceiling reed blinds also selected by Saarinen.

Dan Kiley’s original landscaping surround the main banking lobby with trees in what Saarinen called an “office in a garden.” After the demise of Irwin-Union Bank in the midst of the economic crisis, the bank was acquired by First Financial Bank, which decided to build a new downtown banking center and sold the property to Cummins Inc. Much of the adjoining building space has been converted to offices, but the former bank lobby is now being used by Cummins as a conference and hospitality center as well as flexible work space when there is not a scheduled event in the building. Although the former bank lobby space has been reconfigured, Cummins has strived to maintain as much as possible of the original architecture and has left many remnants of the former banking facility in place.

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