This is the famous Infinity Pool at the top of the Sands three-tower hotel in Singapore.   You’ll find a lot of images online of this pool that feature the illusion that the back edge of the water drops off to the Singapore skyline, you’d think swimmers were in danger of falling off.   This shot shows why they aren’t.

May 2018.  I used a TL-120 with Provia 100F pushed one stop.