The vacant Elkhart Armory building was constructed in 1885 and sits on the Elkhart River, near the city’s downtown.
Grassyfork Fisheries, which was once the largest goldfish hatchery in the world, is listed on the National Register of Historic Places.
Indiana Landmarks fought the decision because it says the post is historic and should be preserved.
A non-profit organization that preserves Indiana’s historic landmarks has added several new structures to its most endangered sites list this year.