St Petersburg - Fort De Soto

Fort De Soto has the only four 12-inch seacoast rifled mortars (model 1890 mounted on 1896 carriages) in the United States. Also at the fort are two 6-inch Armstrong rapid-fire rifled guns (model 1898) which were originally mounted at Fort Dade, and are the last two guns of that model year in the United States.

Fort De Soto was never the site of any major battle but it played a significant part in the evolution of modern weaponry.