 Surviving structures include four officers ' barracks , one dragoon 's barracks , two infantry barracks , a hospital , guardhouse , dragoon stables , ordnance and post headquarters , quartermaster stables , bake shop , flagpole , and magazine . Another feature of the park is 5 acres ( 2 @.@ 0 ha ) of tallgrass prairie restored as part of an ecology @-@ restoration project . 
