The Ellsworth-Jones Building (1902) is the structure that best illustrates the importance of E.S. Ellsworth, the businessman and philanthropist. It is located at 511 Washington Ave., on the south side of the street.

Eugene S. Ellsworth was a land broker, town developer, and philanthropist of immense success. The firm of Ellsworth and Jones, headquartered in Iowa Falls, purchased and sold land throughout the state of Iowa and other midwestern states.

Ellsworth was active in more than business affairs. He was instrumental in Iowa Falls' development in that he helped secure rail transportation, telephone communication, a golf course, and constructed significant commercial buildings for the city. At the time of his death, he was one of the four wealthiest men in Iowa.

The Ellsworth-Jones building is a superbly intact example of Neoclassical commercial architecture. From the egg and dart motif of the columns at street level, to the dentil work on the cornice, the exterior of the building is resplendent with neoclassical details. Ionic and Doric columns, Roman arches, acanthus leaf keystones, and foliated decorative elements are only a few of the decorative elements found on the exterior of the Ellsworth-Jones Building. There is a three-story safe, still in use, in the interior of the building.

The building is currently occupied by Nissly and Nissly accounting and farm management and is not open to the public.