St. Augustine's historic district is historical. And very photogenic. There was a time when northern Florida and southern Georgia were the border zones of Spanish occupation to the south, pressing on the British occupation to the north. St. Augustine was a Spanish colony back in the day, and the Spanish were sitting pretty with their Castillo San Marcos star fort (New! Sloped walls! Deflect non-rifled cannonballs!) located just inside the inlet to the Atlantic Ocean, with 270-degree views of upriver and downriver. NObody sneaks up on a state-of-the-art 16th-Cen. Spanish fort.