Hong Kong is a beautiful city on the ocean that's surrounded by hills. The city is full of modern, high-rise buildings. Some have a giant, built-in hole in the building. These are known as "dragon holes." Of course, there are no dragons in Hong Kong. Rather, these real holes act as gates that let mythical dragons fly through. Each day the dragons can fly from their hilltop homes above the city down to the water. At night they can return through the same hole. You'll never see the dragons. But you might feel a breeze as they fly over!