Most of the downtown is listed with the National Register of Historic Places. The more exclusive National Historic Landmarks program, in a highly unusual move, honored the city by accepting six locations simultaneously.
Cummins Inc. Irwin Conference Center (formerly Irwin Union Bank and Trust)
500 Washington St
The bank was designed by Eero Saarinen in 1954, with landscape design by Dan Kiley. It is a low, glass-walled building set in a grove of trees. Unusual domed lights and an open interior creates a large open room and a feeling of openness and friendli...