Old Main

Illinois

• Old Main, Almira College, listed on the National Register of Historic Places listings in Bond County, Illinois, currently part of Greenville College
• Old Main, Augustana College, constructed from 1884 to 1893, listed on the National Register of Historic Places in Illinois
• Old Main (Eastern Illinois University), one of the castle-like structures built on several Illinois universities during and after the administration of Governor John Peter Altgeld
• Old Main at Illinois State University, opened 1860, top story removed ca. 1940, remainder of building demolished in 1958; the bell, dating to 1882, is displayed on the campus quadrangle
• Old Main (Knox College), the only existing site of the 1858 senatorial debates between Abraham Lincoln and Stephen Douglas, in Illinois
• Hauptgebaude, commonly known as Old Main, at Elmhurst University
• Old Main, North Central College, completed in 1870, with a fourth floor in the central part of the building added in 1998
• Old Main (North Park University), built by North Park University in 1894 in North Park, Chicago and listed on the National Register of Historic Places listing in North Side Chicago