Willis Allen House

The Willis Allen House is a historic house located at 514 S. Market St. in Marion, Illinois. Built in 1854, the house is the oldest remaining in Marion. The house was built for U.S. [House of Representatives|U.S. Representative] Willis Allen, the first member of the House from Williamson County. Allen, who settled in Marion in 1830, served in the House from 1851 to 1855; he was also a lawyer, judge, local politician, and Illinois Senator. The house is a two-story Italianate residence built from brick and sandstone. The hip roof of the house features a cornice with cavetto moldings and Tudor arched brackets.
The house was added to the National Register of Historic Places on February 11, 1982.