The Delmar Depot Railroad and Military Museum is the only remaining symbol of the railroads significant role in the birth of Delmar as a town and in the development of Eastern Iowa. Inside and out, the museum recreates the golden age of railroading. In addition historical documentation and memorabilia of the U.S. military and the Orphan Train offers an informative snapshot of an earlier time.

On June 24, 2011 Delmar celebrated the dediction of the Depot's Veterans Memorial, created to honor those in this area who have served in all facets of military life. Men and women from Delmar and the surrounding area have served from the time of the Black Hawk War to our current involvement in Afghanistan. They have given much for us.

Between 1853 and 1939 the Delmar Depot was a stopping point for the Orphan Train. Developed by the Children's Aid Society of New York as part of their mission to care for neglected children, they began the "free-home-placing-out" of over 200,000 children. In groups of 10 to 40, children and caretakers traveled on trains to selected stops that included Delmar, where the children were taken in by families in the area.