The Chatillon–DeMenil Mansion, located at 3325 DeMenil Place in Benton Park, St. Louis, Missouri, was begun in 1848 for the pioneer , then enlarged to its present form by prominent St. Louis businessman from 1855 to 1863. The house serves as a house museum, and according to its nomination to the National Register of Historic Places, described "as being the finest example of Greek Revival architecture in the Midwest."