Here are some pictures from the "infinity pool" in HongKong.
If you want to go there I suggest you take the bus directly to Tai-O, and from there there is a 1 hour walk to the pool. What we did however was to walk all the way across Lantau park to reach Tai-O, which was a much longer walk (about 3 hours).
On Sunday the pool was packed with people, it was even hard to get in the water. But no so many people were actually swimming.
It's a very nice place though, with a waterfall and fresh water. We stayed there for a few hours, and when the sun started to go down, we went back to Tai-O to have dinner there, in what seemed to be the only restaurant in town.
The pictures I took are actually of poor quality.