If you're looking for a little history (and some nice views) go to Annaberg. The ruins are fairly extensive and well-preserved; better yet, the signage is great and explains what you are looking at and some background on the sugar plantations and the slaves the plantations depended on. There is one area that has a stupendous view of the water. It's an easy side trip and one worth making. There's a drop off not far from the ruins for those who aren't great walkers; and parking is at the bottom of the hill requiring a hundred-yard walk. The walk is worth it.