Sai Kung is mostly undeveloped parkland offering fine hiking opportunities and seafood restaurants.
Hexagonal rock formations can be easily seen at the East Dam of the High Island Reservoir. Formed about 140 million years ago, these volcanic columns can reach as high as 30m tall.
Po Pin Chau was separated due to the waves and erosion. Its rock stacks tower almost vertically from the sea, giving it a pipe organ shape.
The reservoir was completed in 1979 and has a capacity of 280 million cubic metres of fresh water for the city.