Macau was also interesting because I got off the ferry with very little idea of what I was going to do and how I was going to do it. Because of this, I ended up being roped into a car tour with two strangers - a girl from China and a guy from Egypt. We got to see a lot, though the poor girl had to translate the whole time. It was a different experience.
Monte Fort, an old Portuguese fort is on one of the hills. The top of the fort is very pretty, with gardens and a museum.