The Martin Hotel, erected as a Chicago style building in 1912, is located in Sioux City, Iowa.

Added to the National Register of Historic Places in 1983, it is significant for its architecture,[1] operating for many years as the Sheraton-Martin Hotel and now known as the Martin Tower Apartments.

The mural entitled The Corn Room was painted in 1927 by Grant Wood for the Martin Hotel.

Wood's style exemplified Regionalism, the only Modernist art movement to have originated in the Midwestern United States.

An attorney in Sioux City, Alan Fredregill, purchased the work and later decided to donate it to the Art Center himself.