Since Peru, I've had the itch to hike. Then, I read that one of the ten best urban hikes (according to Time Magazine) was right in my own backyard: Dragon Back.
The online guides I found mentioned that the entrance was not easy to find. They were right. My advice is take a taxi towards Shek-O; jump out at the sign for the creamatorium; and then walk up the stairs towards the prison. (I can't believe these are directions on how to start a hike, either). The road near the prison leads you onto the trail.
The hike isn't a difficult one, but you do get some great views that put skyscrapers in the distance at odds with rocky seacoasts.
In all, it took about an hour to hike to the end of the trail. We then caught a bus into Shek-O and had lunch at the popular Chinese/Thai restaurant in town. If it's a nice day, take your swimsuit so you can hit the beach right there in Shek-O.
There are plenty of buses from town that you can catch back into town.