From the Civil War Preservation Trust Website
The state of Florida takes over the Apalachicola Arsenal.
According to this site: http://www.southernhistory.us/Counties/c2gadlib.htm
The building above is the Powder Magazine and one of only two structures that existed from the orginal Arsenal. Today it sits on a hospital complex.
Model by Darian Robbins of 3D Serves U
See it in Google Earth Here.