Disclaimer: no actual whoops heard from the past. If they were, I'm not sure they would "Indian" - Fort Clinch was begun after the end of the Second Seminole War, according to Wikipedia. It was the scene of some Civil War unpleasentness.

It was also made of brick. The real one, that is. Whether the first one looked like this I don't know, but this isn't the real thing, and lacks only Larry Storch to complete the general F-Troop feel.