Sky deck with infinity pool picture

Quick answer：

This refers to a visual representation of an infinity pool located on a sky deck. Infinity pools are designed to give the illusion of water extending to the horizon, typically by having one end of the pool drop off at a cliff or over a ledge, creating the optical illusion of the pool's water merging with the distant view. They are often used in luxury hotels and private homes as a feature for relaxation and aesthetic appeal.