The place gives you good views of Macau (smog permitting) and you can even glimpse over to mainland China. Can even get a good from above view of the cathedral ruins. While there are some historic things to see of the fort, the place acts more like a park for the locals. Go at the right time of day and you can see (and participate) groups doing Tai Chi. Even at night there are plenty of people walking around just to be out and about.