Early settlers built their homes near the ruins, and the town that grew up around them was named for the fort. A large monument was erected in the early 20th century at the fort location. Archaeological excavations in the parking lot of the Sheaffer Pen Company factory in 1965 exposed the central blockhouse of the fort, as well as the foundations of officers' quarters. The site was listed on the National Register of Historic Places in 1973. A replica fort was built several blocks away; much of the labor was supplied by volunteer inmates at the nearby Iowa State Penitentiary.