U.S. Government fort built by slave labor.
It is a bizarre thought. Fort Pickens is a huge brick fortress that was built by slaves whose owners farmed them out to the government contractor who built the fort that was later critical in the defense of Pensacola Bay against the confederates. I don’t think I ever saw mention of that in any history class.
Geronimo
Apache Indians. Prominent Pensacola citizens petitioned and won to get Geronimo moved from Fort Marion to Fort Pickens to be a tourist attraction. Unbelievable.
Homeland security
Huge concrete bunkers and gun batteries buried into the dunes of barrier islands and pointed out to sea. It is interesting to see how the defenses have changed over the years. Through it all, it is pretty clear where they felt the threat was coming from.