Fort Clinch is an old military installation originally intended to guard the mouth of the St Mary's River and defend the port of Fernandina. It was occupied by the Confederate army in 1861, but taken over by Union forces in early 1862. It was also used in 1898 in the war with Spain and again during WW2. I needed more practice with my new ultra-wide lens, so I decided to keep it on the entire time.