From the record
“The Des Moines Fire Department Headquarters' Fire Station No. 1 and Shop Building are historic buildings located in downtown Des Moines, Iowa, United States. Completed in 1937, the facility provided a unified campus for the fire department's administration, citywide dispatch, training, maintenance, as well as the increased need for fire protective services in the commercial and warehouse districts in which the complex is located.”
Wikipedia article Des Moines Fire Department Headquarters, CC BY-SA 4.0.
One of 208 National Register listings published here for Polk County · listed in 2014 · category: Building.
Sources: the Wikipedia article · the National Register database, National Park Service