Terri C.
Google
This place is a ruin, but it is absolutely very well preserved. It is out of the way, but to me it is worth a visit, especially if you like old architecture, towers, and forts. There is a very cool beach down below that has beautiful blue waters. I see some people snorkeling, so there must be nice things to see. It's open 24 hours a day, and it's free to visit.