Sheldon Logan
Google
A definite must visit if you go to Santiago de Cuba(This fort is a UNESCO world heritage site for a reason). It's one of the largest forts I have been to in the Caribbean with many levels, stunning views of the Caribbean, and generally a lot to see. You can actually climb all the way down to the sea ( don't do this in the middle of the day because it's super hot here). I would recommend bringing water as their isn't much shade and it can get super hot.